Do you dream of cascades of enormous wisteria flowers but get a vine-full of foliage instead? This plant blooms on the previous year’s growth so the secret to get bigger wisteria flowers next summer lies in what you do with it now. Prune wisteria in July and you'll direct all its energy into growing next year's flowerbuds.

In July, your wisteria vine has finished producing this year’s flowers and gets busy growing long, whippy stems full of leaves. Leave these straggly stems to flourish and you won’t just have a giant plant on your hands, but far fewer flowers next year, and perhaps none at all.

Remove those unruly long stems now, however, and you’ll force your vine to focus its energy on growing fat flowerbuds for a waterfall of big, beautiful blooms next May and June. And it's easy to do, even if you're a beginner gardener. Pruning a wisteria vine is a key July gardening job, and a summer trim also makes its second prune at the end of winter so much quicker to do. Ready? Here's exactly how to prune wisteria in summer.

How to Prune Wisteria in July

First, trace the new, straggly stems – called whips – back to the point they emerge from the main framework of the vine. Then count five buds or leaf stalks along the whip and use bypass hand pruners such as these from Amazon or a pair of pruning scissors like these from Amazon to cut just above that fifth bud.

Shorten all the whips in this way. If you find some have already wound themselves into a big tangle, don’t worry about untangling them – just get snipping. It’s not critical to precisely count five buds or leaf stalks, that’s an optimum number to aim for.

If your vine also has bare stems hanging downwards, snip those off too. These are what’s left of this year’s flowers and they’ll soon turn yellow and look unsightly. If there are seedpods attached, you might want to leave them to enjoy the sight of these silvery adornments. But, if your goal is huge flowers next year, it’s best to remove them as that will prevent the vine from wasting energy on seed production.

Removing all this whippy growth halts the wisteria’s rampant growth and stops the plant putting all its energy into growing stems and leaves. And that's important: wisteria certainly isn't one of those well-behaved vines that won't scramble out of control. This vine has evolved to grow rapidly up through tall trees in a forest to reach the sunlight, so growing all these whips to help it clamber up through a tree canopy to get life-giving sunshine is its number one priority in summer.

So, removing the whips saves a whole heap of energy that can be used to grow bigger flowers.

Getting rid of this leafy growth also allows more sunlight to reach the short lengths of woody stems left, which is critical. Sunshine is necessary to ripen this wood, and more sun will grow fatter flowerbuds for bigger blooms. Skip pruning your wisteria in July and all the foliage that grows on the whips can block so much sunlight that your vine doesn’t flower at all the following year, as flowerbuds only form on sun-ripened wood.

The other advantage to pruning wisteria in July is that it keeps this vigorous vine, which has the potential to become invasive, under control. Leave these whips in place and each one is capable of growing up to 10 feet long. Once they've hardened into a woody tangle around drainpipes and chimneys, pruning them in late winter is a far harder task.

So now you know exactly what to do, you can be confident about trimming your vine to get more wisteria flowers, avoiding common pruning mistakes. By shortening the whippy growth in July, your vine will produce less foliage and more flowers for a spectacular display next year.

How to Prune Wisteria in Late Winter

Wisteria needs pruning twice a year, once in late summer and once in late winter. And the good news is that shortening all the whips on your wisteria in July makes the main winter prune so much easier.

When winter-pruning a wisteria vine in January or February, you simply need to reduce those stems you cut in July further, to two or three buds. You can tell which are the flower buds and which are the leaf buds: the fat, teardrop-shaped buds will form flowers, while the thinner, flatter, more pointed buds will grow leaves. Creating these short spurs concentrates all the plant’s energy into the fattest buds at the base of the stems, giving you much larger flowers.

In late winter, you can also prune to remove dead, damaged or diseased stems, to keep your vine healthy, but leave the main framework alone.

Other Plants to Prune in July

If you’ve only got time to prune one plant in July, make wisteria your priority. Here’s what else can be pruned in July, once you’ve done that vital task:

• Early-flowering shrubs such as philadelphus (mock orange), weigela, forsythia and deutzia, if you haven't pruned these already. All these shrubs flower on the previous year’s growth so pruning them now gives them plenty of time to form fresh growth and next year’s flowerbuds.
• Fast-growing hedging plants such as privet. While you should trim slower-growing hedging plants such as box, hornbeam and beech at the beginning of summer, and again at the end, giving faster-growing plants such as privet a trim every 4-6 weeks will keep it in shape.
• Early-flowering honeysuckle, once it’s finished flowering. Reduce flowered shoots by a third and, if your plant is only flowering at its stem ends, cut up a quarter of stems to two feet from the ground to encourage blooms across the whole plant.
• Fruit canes that have finished fruiting, such as early-fruiting raspberries. Cutting old stems off at the base to make room for new stems.
• Rambling roses that aren’t rebloomers, if they’ve finished flowering. The ideal time to prune ramblers is immediately after they’ve finished flowering in late summer, shortening the side branches to around 4 inches and clearing out any old wood.
• Trained fruit trees such as cordon apples and pears. Standalone fruit trees are pruned in winter but shoots on highly trained trees can be shortened now.

When wisteria is in full bloom, it stops people in their tracks. What happens in the months after is less dramatic, but probably more consequential. June sits right at the start of the long post-bloom stretch and your vine is already channeling energy into new growth.

That’s useful as long as it goes into the right places and a problem if it doesn't. Left alone through summer, wisteria can prioritize wood over flowers, which is a pattern that you may want to interrupt early. Keeping an eye on wisteria and tending to it now will set it up for success next spring. That’s why I compiled a list of the most pressing tasks to do to your wisteria in June.

Most of the tasks on this list take under an hour and don't require anything beyond the basic gardening tools. Good wisteria care during this time window is less about intervention and more about keeping the vine oriented toward what a gardener actually wants from it. Check these chores off your list now for reliable blooms every spring, not just sometimes.

What to Do With Wisteria in June

Doing the following tasks in June will set up your wisteria for success again next spring and the year after that. Proper care after blooming is vital to ensure lots of flowers next year. Here’s what to do.

1. Cut Back New Growth

By June, wisteria is putting out long, soft new shoots – sometimes several feet (up to 1 m or more) of growth in a few weeks. These are the whippy green stems extending well beyond the established framework of the vine. Left to run, they redirect energy away from the flowering spurs that produce blooms and instead go toward vegetative growth that mostly adds bulk.

Cutting them back to five or six leaves from the base of each new shoot refocuses the plant. It sounds drastic on a vine that's clearly thriving, but this is the summer prune that wisteria experts recommend. Skipping it will leave you with a spectacular vine that rarely flowers.

The timing in June is deliberate. Growth is active, but still young enough to cut cleanly. At this time, there's enough of the season left for the plant to respond by putting energy into next year's flower buds rather than more stems.

A sharp pair of bypass pruners from Home Depot makes cleaner cuts than anvil-style pruners on green wood, which matters when there's a lot of cutting to do. Prune wisteria again in late winter, cutting the same shoots back further to two or three buds. That two-cut approach is what keeps flowering wood close to the main framework.

2. Check & Adjust Supports

Wisteria gets heavy. An established vine carries a lot of wood and June is a good time to look at whatever it's growing on before the full weight of summer growth makes any problems harder to deal with. Wires that were tight two seasons ago may have worked loose.

A trellis that seemed solid can shift once the vine fills out. Any support that has moved or weakened is worth resetting now while the growth is still manageable rather than after it's thickened and set in place.

For vines grown against masonry or timber, check that wall anchors haven't pulled out and that the vine hasn't found its way behind gutters or under roof edges. Wisteria will push into gaps and pry them wider over time. That's not alarmist, just the reality of fast-growing wisteria.

Catching problems in June keeps the correction minor. Waiting until fall means cutting back mature growth to fix something structural, which means more work and a longer recovery.

3. Water Newly-Planted Vines

Established wisteria is drought-tolerant enough to ignore once it's been in the ground a few years. In the first and second seasons, though, June heat is a real stress factor. The root system hasn't spread far yet and a vine pushing out aggressive top growth during a dry stretch can run into trouble even faster than some other plants would.

Watering plants deeply each week is more useful than frequent shallow watering. The goal is moisture reaching down through the root zone rather than just wetting the top few inches (8-10 cm) of soil.

A soaker hose at the base is worth using, like this one from Walmart. Water goes straight to the roots rather than sitting on the foliage and wet leaves through warm June afternoons can bring on powdery mildew faster than expected.

For vines that have been in the ground several years, extra watering is usually unnecessary unless there's a real dry stretch going on. A mature wisteria being watered when it doesn't need it tends to respond with exactly the kind of soft leafy growth that the summer prune is meant to cut back.

4. Feed With Low-Nitrogen Fertilizer

Now is the time to fertilize wisteria. The exception is a plant that came out of spring looking weak or growing in poor soil. In that case, a low-nitrogen fertilizer with some phosphorus, like this one from Amazon, can help support root and bud development without pushing excess leafy growth. A formula that’s low in nitrogen and relatively higher in potassium is also a reasonable option, supporting overall plant health without encouraging the vine to overgrow.

Skip the fertilizer on anything growing in a healthy border or soil that gets regular soil amendments. A wisteria that blooms inconsistently is almost never short on nutrients. More often it's been fed too much nitrogen, isn't getting enough sun, or the pruning hasn't been strong enough. Reaching for a feed before working through that list tends to make the situation worse, not better.

5. Train New Growth

Anything left after the summer prune needs to go somewhere deliberate. Young wisteria stems redirect easily while they're still soft. Give them a week or two to harden up and the options narrow considerably without risking a snap. Getting in early means stems follow the framework rather than wandering off toward a neighboring shrub, over a fence line, or up into the eaves.

Soft plant ties or garden wire from Amazon work well for securing stems without cutting into them as they thicken. Avoid anything rigid or narrow that could girdle a stem over time.

Training wisteria vines in June, combined with the summer prune, is what separates a wisteria that grows on a gardener's terms from one that slowly takes over your garden.

Dreaming of a waterfall of pretty wisteria blooms cascading over your pergola come May? Winter is the time to take these five easy steps that will turn your dream into reality. Wisteria is a vigorous plant, and a pre-growing-season prune will ensure it puts all its energy into forming glorious flowers rather than lots of long, leafy stems. It'll also help control the size and shape, and keep the plant healthy.

When's the Right Moment to Prune?

In winter, wisteria is not only dormant but leafless, so you can easily see its structure, which makes it simple to work out which stems to snip off. The right time to prune is just before the plant’s buds begin to swell – and certainly before they open – in January or February, depending on your USDA zone.

What Shape Do You Want?

You can train wisteria into any shape you want with regular pruning. A handy tip is to think of your wisteria as a tree with a trunk, some main branches and lots of twiggy stems. It doesn't need to be a tangled mess – although this vine will happily grow into one if you leave it to its own devices! Be confident, and create a strong framework in whatever shape you'd like, to show off its fabulous flowers.

You may want your 'tree' to have one main trunk. If you're training your plant up and over a pergola, this 'trunk' might be quite tall; if the wisteria is on a house wall, it may be much shorter. Or would you prefer your wisteria to be more like a multi-stem tree, with numerous 'trunks', perhaps trained into a fan or espalier shape?

While your plant is young, you'll want to build the framework of this ‘tree’, choosing which of last year’s growth you want to keep to add to its main structural frame. Leave this unpruned, or shorten it only to the length you need. With the rest of the plant, however, and if your wisteria is more established, it's time to be brutal to keep this fast-growing beast under control.

How to Winter-Prune a Wisteria

1. Deal With Last Year’s Growth

Your first step is to cut back all of last year’s growth to two or three buds above the older, woodier main stems. This not only gets rid of any excess length, but the short spurs will yield more flowers. Clearing this recent growth also means the blooms won’t be hidden behind a forest of foliage.

As you prune, keep the overall skeleton of the wisteria in mind. New growth will typically be in the direction the last bud faces, so by choosing which bud to cut above, you can avoid congestion, fill any gaps or encourage your plant into a wider shape or shift to the left or right.

Make sure you cut just above a bud – around 3mm is good – rather than leaving a stub of stem above it. This stem-end will die and could carry disease into the plant. Make angled cuts, as this will help prevent water settling on the stem ends.

2. Remove Damaged Sections

You’ll likely come across a few dead or diseased stems, or sections that have been damaged by winter storms. Snip these right back to the main branches or trunk, making a cut that’s flush with the older stem.

If you’re not sure if a stem is dead or not, lightly scratch its surface with one of the pruner blades: if you see any green, it’s still alive.

3. Take Out Unwanted Stems

Now take a step back and look at the whole plant. Are there any unwanted stems? You might need to thin a congested area, remove a stem that’s crossing another and is likely to rub and cause damage, or remove some outer growth if you want to keep your wisteria compact. Aim to create an airy framework.

It’s fine to shorten older stems as long as you cut just above a younger shoot. If you want to take out a whole stem, cut it off flush with the branch or trunk, or at ground level. Don’t overdo it, though. If the plant hasn’t been pruned in a few years, or you want to remove thick, woody stems, it’s best to gradually reshape your wisteria over a few years.

4. Tidy the Base

Look for any suckers coming out of the ground around the wisteria’s base, and cut these off at ground level. Many wisteria are grown on grafted rootstock, so these stems could be a different plant altogether!

It’s a good idea to remove any branching stems from the first foot or two of the main trunk, or trunks, as these are unlikely to be flowering stems.

5. Check Ties

Before you finish, check existing ties are still strong, and tie in any unattached stems to the support. Velcro ties like these One-Wrap Garden Ties from Amazon are a great choice for wisteria as they're easily adjusted as stems thicken.

What Tools Do I Need?

A quality pair of hand pruners, such as these Fiskars Bypass Pruning Shears from Amazon, is a must. It’s vital that they’re sharp, as clean cuts are far less prone to disease. If you’re in any doubt, a tool such as this Coroner Blade Sharpener from Amazon is a wise buy to give your pruners some TLC.

If your wisteria is a fairly young plant, or has been regularly pruned, then you’re all set. However, if you’re tackling a wisteria that hasn’t been pruned in a few years, or you want to reshape the plant, you’ll need to bring in the heavy crew. Old wisteria stems are woody and can be tough to cut, so a pair of assisted action pruners like these Ratchet Pruning Shears from Amazon will boost your cutting power. For really thick stems, and for getting into awkward spots if stems are tangled, a pruning hand saw such as this Fiskars Hand Saw from Amazon is a better choice.

If your wisteria is trained above head height, then these Long Reach Cut & Hold Pruners from Amazon will cut stems up to half an inch wide, or reach for a sturdy step ladder such as this Foldable 4 Step Ladder with Handrail from Amazon.

A tarp with handles like this Heavy Duty Tarp from Amazon makes clear-up quick.

When Should I Prune Again?

It’s best to prune your wisteria twice a year, every year. Every January or February, carry out this shaping prune. Then in August, it’s a smart move to do a second, less severe, prune. All you need do in late summer is cut all the long, whippy new growth back to five or six buds. This keeps the plant tidy over winter, and makes your primary winter prune much easier.

Wisteria is a beautiful flowering vine that produces grape-like clusters of lilac, bluish, or occasionally white blooms. If you have seen these sprawling vines with spring and summer flowers climbing an arbor, trellis, or porch and been tempted to get one for your garden, beware. Fast-growing wisteria vines are common, and can be a real problem.

Is Wisteria Invasive?

There are several types of wisteria we see in American gardens. Some are native, but many of the common vines found in garden centers are not native. The most common types are Japanese (Wisteria floribunda) and Chinese wisteria (Wisteria sinensis).

Both of these Asian wisterias are considered invasive in many areas. Check with your local extension office for information regarding your region or state. There are pros and cons of growing wisteria, but in North America, wisteria is labeled as invasive because of how fast it grows and its tendency to choke out other plants. It can also girdle trees and kill them.

How Fast Do Wisteria Vines Grow?

Non-native wisteria growth rate is extremely fast. These vines can grow as much as ten feet (3 m) in one year. This is the primary problem with Asian wisterias and why they are considered invasive in many areas. Any non-native plant that grows so quickly can limit the growth of or even kill native species.

Another issue is that out-of-control growth can damage structures. If not pruned regularly and aggressively, wisteria can grow up the side of a house, causing damage to the siding and roof.

How Long Does Wisteria Take to Grow to Full Size?

Wisteria vines can easily grow up to 30 to 40 feet (9 to 12 m) with vines as big as 15 inches (38 cm) in diameter, so controlling wisteria vines is important. Asian wisteria species are also very long-lived, up to 50 years. With 10 feet (3 m) of growth per year, you can have a full-size vine within just a few years.

Native Alternatives to Invasive Wisteria

Because of its invasive nature and high maintenance needs, many gardeners are rethinking Chinese wisteria. A good alternative is Wisteria frutescens. Also known as Texas or American wisteria, this native species grows throughout the eastern U.S. and is hardy to zone 5.

Native wisteria can reach impressive heights of 30 feet (9 m) like invasive wisteria, but it will do so much more slowly. This makes it a good choice for anyone worried about harming other plants or the high pruning needs of Chinese wisteria.

There are some other differences between Texas and Asian wisteria:

• While the Asian species flower first, native wisteria leafs out first and then blooms.
• The flower clusters (racemes) on Texas wisteria are rounder and more compact. The Asian racemes are longer.
• Native flower racemes are 3 to 6 inches (7.6 to 15.2 cm) while the Asian racemes can be up to 12 inches (30.5 cm) long.
• Both species are legumes that produce seed pods. On Asian species, the pods are fuzzy, while the native seed pods are smooth.

A slightly smaller option is Kentucky wisteria (Wisteria macrostachya). It grows between 15 and 25 feet (4.5 to 7.6 meters) but has flower clusters that are larger than those on the Texas wisteria.

Another benefit of the native species is that they begin to flower much sooner. You can probably find a transplant that is already blooming, while the non-native species might take several years to produce any flowers.

Growing Wisteria

Whichever type of wisteria you choose, they need full sun for optimal flowering. They do best in soil that is moist but not soggy, rich and humusy, and slightly acidic.

All wisteria types need something to grow on and support their vines or training. One solution to managing an unruly non-native species is to train it to grow as a tree far from buildings or other plants. Use a metal pole to support a single strong vine and prune it once or more a year to look like a weeping tree.

All species also need regular pruning to maintain the size and shape of the vine. Native species need much less vigorous pruning. With the Asian wisteria, plan to prune twice a year to keep it in check.

Wisteria is notable for its lovely blooms, but what if you have a bad-smelling wisteria? As bizarre as a smelly wisteria sounds (the wisteria smells like cat pee actually), it isn’t uncommon to hear the question, “Why does my wisteria smell bad?”. So why on earth do you have a bad-smelling wisteria?

Why Does My Wisteria Smell Bad?

Flowering vines are much sought after for their ability to cover unsightly areas, provide privacy, give shade, and for their beauty. A commonly planted vine that encompasses all these attributes is the wisteria.

Wisteria vines often have the bad reputation of monopolizing a garden space. This is true of Chinese and Japanese varieties, so many gardeners opt for ‘Amethyst Falls’ wisteria. This variety is more easily trained to a trellis or arbor and it blooms heavily a few times each growing season.

While there is much information out there regarding this cultivar, there is one tiny little detail that is often omitted, purposely or not. What is this great secret? As beautiful as ‘Amethyst Falls’ may be, this cultivar is the culprit, the reason for a smelly wisteria. It’s true – this cultivar of wisteria smells like cat pee.

Help, My Wisteria Stinks!

Well, now that you know why you have a bad-smelling wisteria, I imagine you would like to know if there is anything you can do about it. The unfortunate truth is that while some gardeners think this stench might be the result of a pH imbalance, the reality is that ‘Amethyst Falls’ just plain smells like cat urine.

The good news is that the foliage isn’t the guilty party, meaning the plant only reeks when in bloom. It’s really a case of either live with a wisteria that smells bad for the short time the vine is blossoming, move it to a further away area of the garden, or just get rid of it.

Another bonus regarding ‘Amethyst Falls’ is it is great for attracting hummingbirds. Hummingbirds, I might add, have very little sense of smell and are not the least disturbed by the stench of the blooms.

Wisteria is a magical vine that provides a cascade of beautiful, lilac-blue blooms and lacy foliage. The most commonly grown ornamental variety is Chinese wisteria, which while lovely, can be invasive. A better choice is its cousin the American wisteria (Wisteria frutescens). Growing American wisteria as an alternative still offers the elegant blooms and foliage but in a native, non-invasive form. Read on for some tips on how to grow American wisteria and enjoy this North American native in your landscape.

What is American Wisteria?

Using native plants in the garden is a smart choice. This is because native plants are uniquely adapted to the region and require less specialized care. They also won't harm the wild flora if they happen to escape cultivation. American wisteria is one such indigenous plant. What is American wisteria? It is a friendly local vine with gregarious blue-flowered charm and might be perfect in your garden. American wisteria can be found throughout the southeastern states. It primarily occurs in bottomlands in moist areas such as swamps, along rivers, and in flood plains. As a cultivated plant, it is suitable in USDA zones 5 to 9. It is a deciduous vine that may grow up to 30 feet (9 m.). This rambling beauty has delicate pinnate leaves divided into 9 to 15 leaflets. The flowers are pea-like and hang in decorative pendant clusters, usually blue or violet, but occasionally creamy white. It is a more controlled plant than the Chinese version and has added seasonal interest with its velvet pods.

How to Grow American Wisteria

A quick search indicates that this plant is not widely available, but it can be ordered online. In areas where it is native, some local nurseries have the plant in cultivation. If you get lucky enough to find the plant, choose a nutrient-rich, moist location of the garden. It will bloom in either full sun or partial shade. Adding to its adaptability, it can also tolerate a range of soil types. Be cautious when planting it where curious animals or children play. According to American wisteria information, the seeds in the pods are quite toxic and can lead to extreme nausea and vomiting.

American Wisteria Care

A support structure is required for growing American wisteria. A trellis, arbor, or even a fence are ideal locations to display the dainty leaves and dangling blooms. The plant requires consistent moisture, especially in summer. Pruning is still a crucial part of American wisteria care. In areas where it is grown over a structure, prune it hard annually after flowering to keep the vine in check. On horizontal surfaces such as fences, prune in winter to remove side shoots and keep the plant tidy. American wisteria is not troubled by any significant diseases or insects. In fact, it is an important host plant for the silver-spotted skipper and long-tailed skipper butterflies.

Wisteria is a classic, deciduous vine, beloved for its large, drooping clusters of fragrant, pea-like flowers and quick growth habit. Wisteria fits in nicely in cottage gardens, Zen/Chinese gardens, formal gardens, and can even do well in xeriscape gardens once they are established. There are approximately ten different species of wisteria, native to China, Korea, Japan, and the eastern United States. While not all of these species are commonly found in garden centers or online nurseries, many new species and cultivars are easily available. Chinese wisteria (Wisteria sinensis) and Japanese wisteria (Wisteria floribunda) are two of the most popular species of wisteria for the landscape. However, in this article, we will discuss the lessor known, Silky wisteria (Wisteria brachybotrys syn. Wisteria venusta).

Silky Wisteria Information

Silky wisteria is native to Japan. However, it is not classified as Japanese wisteria because it has characteristics that make it quite different than the species commonly known as Japanese wisteria. The foliage of silky wisteria is covered in silky or downy hairs, which accounts for its common name. While Japanese wisteria has long flower racemes, silky wisteria’s racemes are only 4 to 6 inches (10-15 cm.) long. Silky wisteria plants are hardy in zones 5 through 10. They bloom from midspring to midsummer. The violet-lavender blooms are highly fragrant and attract bees, butterflies, and birds to the garden. From a distance, wisteria flower racemes look like clusters of grapes. Up close, the small flowers are similar to pea flowers. When the flowers fade, wisteria produces pea-like seed pods, and these seeds can be toxic if ingested. When propagated by seed, silky wisteria plants may take five to ten years before they produce blooms. However, wisteria plants usually produce more and more blooms each year they age.

How to Grow a Silky Wisteria Vines

Silky wisteria vines grow best in full sun to part shade. They will tolerate poor soil but prefer moist loam. Fertilize silky wisteria plants in spring, with a low nitrogen fertilizer. Wisteria plants have nitrogen-fixing properties, so adding nitrogen to them is not necessary. They will, however, benefit from added potassium and phosphorus. Silky wisteria plants are a fast-growing deciduous vine, growing up to 40 feet (12 m.) long. Silky wisteria vines will quickly cover a pergola, arbor, or trellis. They can also be trained to grow in the form of a tree. Wisteria can be pruned after blooming to control its growth. Some popular varieties of silky wisteria plants are:

• ‘Violacea’
• ‘Okayama’
• ‘Shiro-Beni’ (produces flowers of purple shades)
• ‘Shiro-kapitan’ (produces white blooms)

If you’ve ever seen a wisteria in bloom, you will know why many gardeners have a penchant for growing them. As a child, I remember my grandmother’s wisteria creating a beautiful canopy of dangling pendulous racemes on her trellis. It was a sight to behold, and to smell, as they were wonderfully fragrant – just as enchanting to me now as an adult as it was back then. There are about ten known species of Wisteria, with numerous cultivars associated with each that are native to the eastern United States and eastern Asia. One of my personal favorites is Kentucky wisteria (Wisteria macrostachya), the type my grandmother grew. Read on to learn more about caring for Kentucky wisteria vines in the garden.

What is Kentucky Wisteria?

Kentucky wisteria is notable because it is the hardiest of wisteria, with some of its cultivars rated for zone 4. The majority of Kentucky wisteria (such as cultivars ‘Abbeville Blue,’ ‘Blue Moon,’ and ‘Aunt Dee’) feature a color that falls in the blue-violet spectrum, the one exception being the cultivar 'Clara Mack,' which is white. Kentucky wisteria vines bloom in early to midsummer with tightly packed panicles (flower clusters) typically reaching 8 to 12 inches (20-31 cm.) long. The bright-green, lance-shaped leaves of Kentucky wisteria are in a pinnately compound structure with eight to ten leaflets. The formation of 3 to 5 inch (8-13 cm.) long, slightly twisted, bean-like, olive-green seedpods begin in late summer. This deciduous woody stemmed twining vine can grow 15 to 25 feet (5-8 m.) long. Like all twining vines, you will want to grow Kentucky wisteria vines on some support structure such as a trellis, arbor, or chain link fence. Also, just to set the record straight, there is a difference between Kentucky wisteria and American wisteria. While Kentucky wisteria was originally regarded as a sub-species of American wisteria (Wisteria frutescens), it has since been classified as a separate species due to its longer blooms and because it has a higher cold hardiness rating than American wisteria.

Growing Kentucky Wisteria

Caring for Kentucky wisteria is easy but getting it to bloom may prove to be a challenge. Such is the nature of wisteria, and Kentucky wisteria is no different! It is best to improve your odds from the onset, meaning you may want to avoid growing Kentucky wisteria from seed. Wisteria plants started from seed can take 10 to 15 years (even longer or perhaps never) to bloom. To considerably shorten the time to flowering and a more reliable path to flowering, you will want to either obtain or prep your own cuttings or acquire good quality plants from a certified nursery. Your Kentucky wisteria planting should occur in the spring or fall and be in soil that is characteristically moist, well-draining, and slightly acidic. Kentucky wisteria in gardens should be in a location that is full sun to part shade; however, a full sun location receiving at least six hours of sun each day is preferable as it will help encourage better bloom growth. In addition to proper lighting, there are other ways to help elicit the blooming of Kentucky wisteria in gardens, such as a spring feeding of superphosphate and routine pruning in summer and winter. Even though wisteria is considered to be drought tolerant, you will want to keep the soil consistently moist during the first year of growing Kentucky wisteria to help the root system get established.

Wisterias are beautiful twining, climbing vines. Their fragrant purple flowers provide scent and color to the garden in springtime. While wisteria can be grown in the ground in appropriate regions, growing wisteria in pots is also possible. For information about how to grow wisteria in a container, read on.

Growing Wisteria in Pots

Wisteria offers so much ornamental value. This includes attractive, gnarled stems and stunning blooms with a delightful fragrance. However, they are aggressive vines that can easily outgrow the area you’ve allotted them. There are many species of wisteria. The most popular for gardens are Japanese wisteria (Wisteria floribunda), Chinese wisteria (Wisteria sinensis), and silky wisteria (Wisteria brachybotrys). These species of wisteria are all vigorous. They can reach 30 feet (9 m.) tall with a spread of up to 60 feet (18 m.) when planted against a wall. One way to contain your wisteria is to start growing wisteria in pots. Container grown wisteria work well as free-standing plants with appropriate and regular pruning. You’ll have to read up about potted wisteria care before you begin.

How to Grow Wisteria in a Container

When you want to grow wisteria in a pot, start with a pot that is only a little larger than the one the plant came in. You’ll want to repot the container grown wisteria as it develops. In time you may need a large planter. Planting wisteria in a pot is easiest if you buy a single stem plant since it is easier to train to one trunk. Install a sturdy stake or stick about as tall as you are at the time of planting, then train the stem of the container grown wisteria to grow up it. Tie the stem to the support as it grows. When the stem arrives at the top of the support, remove the tip. The wisteria in a pot will now branch out in a rounded shape. Each winter, trim the shoots to about a foot long (31 cm.). In time, the container grown wisteria resembles a small tree. Likewise, you can grow and train your potted wisteria as a bonsai plant.

Potted Wisteria Care

Place your wisteria container in a full sun location for maximum blooms. You’ll need to check it regularly to make sure the potting soil doesn’t dry out. You’ll need to feed your wisteria in spring every year. Use a general-purpose fertilizer with a ratio such as 5-10-5.

Are Wisteria Roots Aggressive: Learn About The Root System Of A Wisteria

Wisteria are strong vines that climb aggressively. The root system of wisteria is equally aggressive beneath the soil. Whether you choose Chinese wisteria (Wisteria sinensis) or Japanese wisteria (Wisteria floribunda), plant them far from your pipes and sewer system. How big do wisteria roots grow? Are wisteria roots aggressive? Read on for answers to these common questions about wisteria root systems.

How Big Do Wisteria Roots Grow?

When you consider how tall wisteria vines can grow, it just makes sense that the wisteria root system is strong and aggressive. For example, Chinese wisteria can shoot up to 60 feet (18 m.) with stems up to 15 feet (5 m.) in diameter. Both Chinese wisteria and Japanese wisteria are the two most popular types of garden wisteria in the U.S., and both grow and spread aggressively. The wisteria native to the United States is Wisteria frutescens. It grows to 30 feet (9 m.) tall, and the roots are a bit less aggressive than the imports. As a woody plant, however, it still has powerful roots that you don’t want close to your sewer pipes.

Are Wisteria Roots Aggressive?

A wisteria root system digs deep and spreads wide in order to anchor the huge vine. Are wisteria roots aggressive? Yes, the root system of wisteria is very aggressive.

Since the wisteria root system is so large and powerful, you should avoid planting wisteria near walls or pathways. The root system of wisteria can easily damage these. Experts recommend that if you locate a wisteria near a structure or walkway, you should insert a corrugated panel some 6 feet (2 m.) long and several feet (1 m.) wide beside the plant to divert the roots.

Wisteria Root Removal

You may be thrilled at how fast your new wisteria grows, throwing up a vigorous vine and developing a powerful wisteria root system. However, if one day you decide to remove the vine, you will be less thrilled.

Wisteria root removal can be a big headache. You can perform this manually, mechanically, or with chemicals. However, you will probably have to invest quite a lot of time before you are certain the wisteria root system is completely eliminated.

When the wisteria you want to remove climbs up walls or trees, do your best to cut the trunks. After that, apply herbicide to the cut surfaces. If you want to remove a thicket of wisteria, try applying a foliar herbicide. Other methods applied to a group of wisteria will disturb the soil too much.

Wisteria plants are graceful vines grown for their dramatic and fragrant purple flowers. There are two species, Chinese and Japanese, and both lose their leaves in the winter. If you own a wisteria plant and you love and want another, you won’t have to spend a dime. Keep your eye out for sucker plants growing from the living root of your vine, then read up on wisteria sucker transplant tips. Read on for information about transplanting wisteria suckers.

Can You Plant Wisteria Suckers?

Plants propagate in different ways. Some, like the wisteria vines, send up offshoots called “suckers” from their underground roots. If you allow these suckers to grow, they form a close-knit hedgerow. Can you plant wisteria offshoots? Yes, you can. In addition to propagating wisteria seeds or cuttings, you can dig up suckers and use them as young wisteria plants ready for a new home. Moving wisteria shoots is not difficult if you know how and when to do it.

Moving Wisteria Shoots

Suckers are not difficult to dig up and transplant. The best time to transplant your wisteria suckers is in late winter or early spring before bud break. Before you start removing a sucker, however, you should prepare the planting location. Pick a spot that gets at least six hours a day of sunlight. Dig out a hole for each sucker. The hole should be 2 feet (0.5 m.) across and 2 feet (0.5 m.) deep. Fill it with water and let it drain through. Then mix well-rotted compost into the soil. Pick a healthy sucker that is between one and two feet (0.5 m.) tall. Push your shovel into the area between the mother plant and the sucker. Sever the root holding the two together, then carefully pry out the sucker and its root ball. Gently remove any weeds that are on the sucker dirt. When transplanting wisteria suckers, place the root ball into the planting hole, adding soil on the bottom of the hole to make sure that the top of the root ball is level with the soil. It’s important to plant the wisteria shoot to the same depth as it was originally growing. Tuck the amended soil into the hole around the sucker. Pat it into place to eliminate air pockets. Then give the wisteria vine a generous drink of water. Keep the soil moist the first year after planting.

Wisteria is a showy climbing vine with clusters of scented dangling white to purple blooms. They provide dramatic impact to fences, trellises, walls and other areas where the thick woody vines can trail or scramble. Two main varieties are used: Chinese and Japanese. Both are fairly hardy vines but they are deciduous, and the lacy leaves turn color and defoliate in fall. A wisteria with yellow leaves may be due to this natural occurrence, or there might be a pest, disease or cultural problem. Let’s investigate it -- why do wisteria leaves turn yellow, and let's find out what, if anything, to do about the issue.

My Wisteria Leaves Turned Yellow, Why?

A classic garden is almost incomplete without the lush vines and pendant blooms of a wisteria vine. The plant’s easy elegance and twining vines create a layer of texture and beauty that is unmatched by other vines. Wisteria leaf problems can stem from a number of conditions, but the plant is vigorous and relatively tolerant of minor imperfect conditions. My wisteria leaves turned yellow during October as a natural response to cold temperatures. If you find leaves on wisteria turning yellow out of season, then it’s time to do a soil test and look for pest activity. Average seasonal foliar displays aside, why do wisteria leaves turn yellow in the growing season? One of the main reasons may be an iron deficiency in the soil. An easy to find soil kit can give you the answer. If iron is deficient, roots have trouble taking up nutrients. Wisteria enjoy neutral to slightly acidic soil. The lack of iron in soil will create a soil pH that is too alkaline. This is easy to amend with the addition of compost or peat. Another possible issue is poor drainage. Overly boggy, soggy soil is not a condition that a wisteria will put up with and that excess moisture will manifest in limp, yellowing leaves that will start to fall off the plant. Check your drainage and stop watering until you can maintain proper porosity.

Diseases and Wisteria Leaf Problems

Wisterias are tolerant plants with few pest or disease issues. That said, wisteria can become prone to viruses and fungal diseases. Tobacco mosaic virus is a common disease of ornamental plants. Aphids and other sucking insects transfer the disease and there is no cure. The leaves become streaked and mottled with yellow and may fall off. If the plant is healthy, the foliar disintegration will probably not kill it, but rampantly infected plants should be removed. Good cultural practices can help a stressed plant and improve its chances of survival. Fungal diseases are the bane of many gardeners. Warm, wet regions are especially prone to fungal issues. Keep leaves dry by watering from under the plant with a soaker hose or drip system. Fungicides may have some effectiveness if applied at the beginning of the season, but if you wait until a wisteria with yellow leaves has been too badly affected, they are not terribly useful. Catch any issues early, and baby the vine to enhance its endurance and vigor.

Pests and Leaves on Wisteria Turning Yellow

It takes some pretty serious infestations to bother a wisteria. Scale and aphids are sucking insects whose feeding behavior can cause faded, yellowing leaves and loss of plant health. In small numbers, they pose no serious threat to the plant but young plants or plants that are stressed may have reduced health. Scales look like tiny bumps on stems and vines. Aphids are small flying insects which can be identified by the presence of honeydew, a sticky substance that is the insect’s waste. Honeydew creates a clear, sticky coating on leaves. Aphids can be rinsed off of the leaves, or either pest can be controlled with insecticidal soap or neem oil.

The long purple flowers of wisteria are the stuff garden dreams are made of and growers will wait patiently for years just to see them for the first time. Those purple flowers can transform any space into something magical, but what do you do if there are curling leaves on wisteria in your garden? This common problem may seem overwhelming, but it's a pretty simple situation. Curled wisteria leaves are commonly caused by sap-sucking pests or a lack of fertilizer in the soil -- both are easy to remedy.

Wisteria Leaves are Curling

When wisteria leaf curl becomes apparent in your garden, check the leaves carefully to determine what is causing the problem. Although you might get lucky applying garden chemicals willy-nilly, it's never a good idea and more often than not will prolong the problem, possibly killing your plant in the process.

Pest Problems

Aphids - If you see small, seed-like insects that cluster on the undersides of leaves, along with a sticky, sap-like material on the leaves themselves, you're probably dealing with aphids. These tiny sap-feeding insects cause leaves to curl when they feed on developing buds, so you may have sporadic wisteria leaf curl throughout areas where aphids are active. Aphids are easily dispatched with daily sprays from a garden hose to dislodge them from their feeding sites. Once detached, the insects die quickly, but many more may hatch to take their place, so be vigilant and spray daily for at least two weeks, making sure to hit the undersides of leaves especially well.

Scale - When twisting of wisteria leaves is accompanied by small waxy or cottony growths near affected leaves, scale insects are probably to blame. These tiny pests are immobile as adults - covered in their protective shells, they often feed undetected. Many gardeners initially misdiagnose these pests as a plant disease or fungal infection, but if you carefully lift a few of the covers with a sharp knife, you'll find a tiny, soft-bodied insect inside. Treat scale with neem oil after giving your wisteria a thorough watering. Apply the spray to areas where scale are feeding on a weekly schedule until you no longer see signs of an active colony and leaves begin to return to normal. Damaged leaves can't be fixed, but new leaves should emerge looking perfect. Neem oil can cause phytotoxic reactions on under watered or otherwise stressed plants, so make sure your wisteria has proper care before starting to spray.

Environmental Contributions

If checking leaves thoroughly doesn't reveal a reason for curling leaves on wisteria, look to the soil. Perform a soil test to see what's going on in the root zone, sometimes a lack of fertilizer can cause wisteria leaves to curl. Wisteria vines do well with a balanced fertilizer, such as a 10-10-10. Too much nitrogen can cause excessive leaf growth at the expense of flowers, so make sure that you really need it before adding extra nitrogen to your wisteria's root zone.

Among the most powerful sights in nature is a huge wisteria in full bloom, but making this happen in the home garden can be more of a trick than it seems since many things can affect the willingness of wisteria buds to open into blooms. When your wisteria won't bloom, you may be frustrated and confused, especially if you've dedicated years of care to your plant. Read on to better understand what causes bud blast in wisteria.

Why Does My Wisteria Not Flower?

There are a few common reasons why wisteria blooms don't open, but they all point to the same thing -- bud injury at critical development points. Severely damaged flower buds won't open; instead, they usually dry up and fall off the plant. Damage can be caused by a variety of environmental problems or very tiny pests called thrips. If your wisteria has bloomed successfully in years past, thrips or uncontrollable weather patterns are most likely causing bud blast and your plant may perform just fine in future seasons. Once you've checked for signs of thrips, including black spots of feces on plant materials, deformed buds, or brown streaks on the petals of any flowers that did manage to open, resuming normal care may be all that it takes to induce blooming next season.

How to Get Wisteria Flowers to Open Up

When you have buds on wisteria not opening, there's very little you can do to force them open. This year's flowers are probably going to be a loss, but you can do more to ensure that the future buds produce beautiful blooms. If your plant has never successfully bloomed, look at the conditions where it's growing -- wisteria needs full sun, good drainage, and a light application of fertilizer in the fall, as well as heavy pruning in the spring after the other wisteria plants have finished blooming. Late frosts and improper summer watering can interfere with proper bud formation. Frozen flower buds will fall off as spring approaches. Late summer is the time when flower buds are initiated by wisteria; if you skimp on the watering during this season, you may be inadvertently hindering the proper development of future flowers. Above all else, watch the use of nitrogen fertilizers. Nitrogen has its place, but in flowering plants it often produces aggressive vegetative growth at the expense of flowers and buds. The addition of phosphorus, like bone meal, can normally help offset this.

Wisterias are magnificent winding vines that perfume the air lightly when flowers are present. The ornamental plants are hardy, fast growing, and prey to few pests or disease problems—most of the time. However, an important pest of the plant, the wisteria borer, is a beetle that tunnels into the woody stems of wisteria, causing interruption of the flow of water and nutrients. Knowing how to control borers on wisteria at an early stage will help protect the plant's health and appearance.

Wisteria Borer Damage

Damage to the appearance of a wisteria is one of the obvious problems, but the issue goes deeper. The holes open up the plant to introduction of rot and disease, as well as other insect invaders. The most important issue is the girdling of crucial meristem tissue on the interior of the stems. This tissue is responsible for ferrying nutrients and moisture to all parts of the plant. When the tunnel cuts through this tissue, the food and water are stopped from traveling to the rest of the stem. Wisteria borer damage is the most problematic in young trees which have few reserves to help them battle back from infestations.

Types of Wisteria Borers

Boring beetles attack many varieties of plants and trees. The main types of wisteria borers are the long-headed borer or round-headed borer. These are actually beautiful beetles with vibrant coloring. The long-headed borer has lengthy antennae and their larvae are called round-headed borers. These appear as chubby yellowish-white grubs with brown heads and evident mouth parts. Round-headed borers on wisteria cause the majority of the damage as they feed and tunnel into wood. One of the most common varieties that may become pests on wisteria is the spotted tree borer. Wisteria borer control begins before the adults lay eggs and prior to tunneling activity.

How to Control Borers on Wisteria

The first step to helping your wisteria is to keep it healthy. Healthy vines grown in good soil, with adequate nutrient and moisture supplies are able to withstand some of the boring activity. Vines that are infested need to be removed so the borers can't move into unbothered real estate. Chemical wisteria borer control with residual sprays must be applied prior to adults laying eggs. The larvae will hatch and eat the poison as they feed, effectively killing them before they can reach the sensitive interior of the stems. If larvae are visible, spray spinosad or Bacillus thuringiensis for non-toxic control. This must be done when the round-headed borers on wisteria are young to be effective.

“Low-Tech” Wisteria Borer Control

When all else fails, try the “pick and crush” method in early spring as larvae emerge to feed. Not only is this satisfying but it is non-toxic and requires no special equipment. Another way to combat the pests is by fishing them out. Use a length of thin wire and twirl it around in the borer hole. You can skewer the larvae and then slowly, gently pull it out of the tree. Some gardeners swear by putting a drop of a petroleum based product in the hole to coat the larvae and suffocate it. Try any of these quick easy controls before you spend a lot of money on chemical solutions. They just might work!

Many people love taking in the wonderful, lilac-colored blooms of wisteria vine each spring. What happens when there are no leaves on the wisteria vine though? When wisteria does not have leaves, it is often thought to be a cause for alarm. However, this isn't normally the case at all.

Reasons for Wisteria Not Leafing Out

Still Dormant

There are actually several reasons why wisteria does not have leaves. Most commonly this can be due to weather. Those having cooler than normal spring weather can often expect delays in trees and other plants, such as wisteria, leafing out. So how do you know if your wisteria with no leaves is simply slow to start (dormant) or actually dying? Check for stem flexibility first. If the plant bends easily, it's ok. Dead plant stems will snap and break off. Next, scrape off a little bark or break a small piece off. Green indicates health. Unfortunately, if it's brown and dried out, the plant is most likely dead.

Poor Pruning

Occasionally, leafing out may be delayed due to poor pruning practices. While there's nothing wrong with cutting out any dieback or unsightly growth, doing so at the wrong time may cause a delay in leafing. On the other hand, doing this in spring could allow more light and warmth to reach the innermost branches, promoting regrowth. Plants that do not receive sufficient light have fewer leaves and slower growth. They will also be paler in color with leggy growth once it does emerge. If pruning has caused a delay, don't worry too much as sprouting will eventually occur.

Wisteria Age

Newly planted tree wisteria may take longer to leaf out in spring. While some people may notice regrowth right away, others may not see any growth until later in the season, from June to late July. During this time, you need only keep the soil somewhat moist. Be patient. Once they become established, the wisteria will begin to leaf out.

Wisteria Variety

Finally, the type of wisteria you have can affect when the leaves emerge. Perhaps you've noticed the blooming of your wisteria but no leaves on the wisteria vine. Again, this can be attributed to the variety. If you notice beautiful purple blooms prior to foliage growth, then you probably have a Chinese wisteria. This type forms flower buds on the previous year's wood. Therefore, it commonly blooms before the plant actually leafs out. Japanese wisteria blooms after the plant has sprouted leaves.

Nothing compares to the beauty of a wisteria plant in bloom. Those springtime clusters of pale purple flowers can create a gardener's dream or-- if it's in the wrong place, a gardener's nightmare. Perhaps you didn't realize just how big a wisteria can grow or perhaps its placement no longer suits your current garden plan. You're thinking about how to transplant a wisteria. It's a daunting thought. Transplanting wisteria is no walk in the garden, but it can be done.

When is the Best Time to Transplant Wisteria

The downside of transplanting wisteria that is well established is that it may take several years for the vine to bloom again. The best time to transplant wisteria is in the late fall or early spring when the plant is dormant, but the soil is workable. Choose your site carefully. You don't want to do this again!

How to Transplant Wisteria Vines

Cut the vine back to about 3 feet (1 m.) tall. Start digging about 18 to 24 inches (46-61 cm.) from the stem. To successfully transplant wisteria, you must dig deep. Continue digging and prying in a circle around your transplant. Wisteria doesn't like to be moved, so take up as large of a root ball as possible. The more root with its original soil, the greater chance of success in transplanting wisteria. Place the root ball on a tarp and drag it to its new location. When you're ready to transplant wisteria, dig the new hole to twice the size of the root ball. Mix the soil from the hole with up to 50 percent compost or leaf mold to provide the best new home for your transplant. Wisteria does best in fertile soil with lots of sun. The best time to transplant wisteria is early morning or evening. Stake the vine immediately. Water well and keep your fingers crossed. Transplanting wisteria can be difficult and back-breaking, but knowing how to transplant wisteria properly will increase your chances of success. Good luck and good digging!

In addition to propagating wisteria seeds, you can also take cuttings. Are you wondering, “How do you grow wisteria from cuttings?” Growing wisteria cuttings is not difficult at all. In fact, it is the easiest way in how to propagate wisteria. You can grow wisteria cuttings from leftover prunings, rooting wisteria plants to share with everyone you know.

How to Propagate Wisteria Cuttings

Taking Wisteria Cuttings

Propagating wisteria from cuttings starts with getting the cuttings. As mentioned, a great source of cuttings can come from pruning wisteria with a set of pruners, like the Felco F6 from Amazon, but you can also take wisteria cuttings from the plant specifically for rooting wisteria plants. Cuttings of wisteria need to be taken from the softwood. This is wood that is still green and has not developed woody bark. 

The cutting should be about 3 to 6 inches (7.5 to 15 cm.) long, and have at least two sets of leaves on the cutting. Wisteria cuttings root best if taken in late spring or early summer.

Preparing Wisteria Cuttings for Rooting

Once you have the cutting, remove any sets of leaves found on the lower half of the wisteria cutting. These will be the main points where new roots will develop. Trim the cutting so that the lowest node (where the leaves you just removed were) are 1/2 to 1/4 inch (1 to 6 ml.) from the bottom of the cutting. If there are any flower buds on the cutting, you can remove these.

Rooting Wisteria Plants

Prepare a pot with well-draining potting soil just like this organic potting soil mix from Amazon that has been thoroughly moistened. Dip the rooting end of the cutting into rooting hormone. Using a finger or a stick, make a hole in the potting soil, then place the wisteria cutting in the hole and gently press the soil in around it. 

Cover the pot in plastic, either by placing plastic wrap over the top of the pot or by placing the whole pot in a plastic bag. It is important that the plastic does not touch the cuttings, so you may want to prop the plastic away from the cuttings with sticks.

 The plastic helps to hold in humidity, which increases the success rate of propagating wisteria from cuttings. Place the pot of wisteria cuttings in a place where they will receive bright, indirect light. 

Check the soil frequently and water when dry to the touch. The cuttings should be rooted in about four to six weeks. Growing wisteria from cuttings is easy when you know how to propagate wisteria correctly.

Wisteria vines are among the most popular flowering vines grown in the home landscape today. Their lush growth and cascading flowers are easy for homeowners to fall in love with. Another plus to the wisteria vine is the minimal care needed to maintain a beautiful plant, but many homeowners do wonder if there is anything they need to do when considering how to prepare wisteria for winter. The good news is that wisteria winter care, like most wisteria care, is minimal. That being said, if you have the time, there are a few things you can do for overwintering wisteria.

Care for Wisteria in Winter

First, let us say that wisteria winter care is not really necessary. Wisteria is an extremely rugged plant and can survive a wide variety of weather conditions. Unless your wisteria is newly planted or has been unhealthy, overwintering wisteria does not require extra work. If you have the time to provide a little extra TLC to winterize a wisteria that is healthy, that's great, but if you don't, don't sweat it. If your wisteria is newly planted or has had trouble in the past year, adding a little additional care for wisteria in winter will help keep it healthy. General additional wisteria winter care includes mulching the base of the plant to give the roots some added protection and trimming away any dead growth you may find on the plant. If it's late fall or early in the winter (after the plant has shed its leaves but before snow has fallen), you can also do some cosmetic pruning to shape the wisteria vine. If you have had trouble in past years with getting your wisteria to bloom, there is a chance that the plant may be suffering from winter dieback, which kills the blossom buds. If you suspect this is the case, wrapping the plant in burlap will help to protect the blossom buds. If your wisteria has bloomed fine in past years, this step is unnecessary. Also, please note that with wisteria, winter dieback only occurs in areas that get extremely cold. If you do not live in a very cold area, there are more likely reasons your wisteria is not blooming. This is really all that's needed for care for wisteria in winter. Even with these things, if you find other things in your yard are more pressing and you do not have time to winterize a wisteria, the wisteria will be okay over the winter without the extra care.

Wisteria is a vine that is well known for its vigorous growth and it's just as notorious for being reluctant to bloom. When a wisteria won't bloom, many gardeners get frustrated and ask, “Why is my wisteria not blooming and what is the secret on how to get wisteria to bloom?”. 

There is no secret to fixing wisteria blooming problems. A little knowledge can help you quickly fix the problem. Let's take a look at what you need to do to understand how to get a wisteria to flower.

Reasons Why a Wisteria Won't Bloom

The most likely reason your wisteria won't bloom is due to too much nitrogen. When a wisteria plant has too much nitrogen, it will have plenty of foliage growth, but very little and maybe no blooms. Another reason for wisteria blooming problems is the environment they're growing in. Wisteria vines that lack full sun or proper drainage may be stressed, and while they will grow leaves, they will not bloom.

Why is My Wisteria Not Blooming

Improper fertilization may be the answer to the question. Fertilizing in the spring can encourage leaf growth and discourage blooms. Lack of maturity may also be the culprit. Most wisteria bought in plant nurseries are the proper age to start blooming, but if your wisteria was grown from seed or given to you by a friend, it simply may not be old enough to flower yet. 

Wisteria must be 7 to 15 years old before they are old enough to bloom. The last, and least likely reason a wisteria won't bloom is over-pruning. Over-pruning will remove the flower buds. It is extremely difficult to over prune a wisteria, however.

How to Get Wisteria to Bloom

Since too much nitrogen is the most common cause of wisteria blooming problems, the easiest thing to do is to make sure this is not a problem. There are two ways to correct this cause of a wisteria not blooming. 

The first is to add phosphorus to the soil. This is done by applying a phosphate fertilizer. Phosphorus encourages wisteria blossoms and helps to balance out the nitrogen. 

The other way to reduce the amount of nitrogen a wisteria plant is getting is to root-prune the plant. This is done by taking a shovel and driving it into the ground in a circle around the wisteria. 

Make sure that you do root pruning at least 3 feet (91 cm.) from the trunk, as root pruning too close to the plant can kill it. Using root pruning as a way how to get a wisteria to flower reduces the number of roots and, by default, the amount of nitrogen those roots take up. 

If these methods do not work to correct your wisteria blooming problems, you can check to see if one of the other reasons may be the problem.

Is the plant getting enough sun? Is there proper drainage? Are you fertilizing at the right time, which is in the fall? Are you pruning properly? And is your wisteria old enough to bloom?

Wondering why wisteria not blooming is frustrating when you don't know the answer, so it's important to know how to get wisteria to bloom so you can start to enjoy the lovely flowers a wisteria produces.

When you grow something as beautiful as the wisteria, you don't want to ruin it by pruning wrong. Therefore, make sure to prune your wisteria according to the directions below. Let's look at a guide to step-by-step pruning of a wisteria.

How to Step-by-Step Prune Wisteria

So, first things first. When do you prune wisteria? You will want to prune wisteria in midwinter and again in the summertime. In the summer, pruning your wisteria should be done about two months after it flowers. When it comes to how to trim a wisteria, you first should recognize that regular wisteria trimming should be done to control growth and encourage more flowers. You cut the season's current shoots back to within three buds from the base. These buds will then bear the coming season's new shoots and flowers.

Pruning wisteria can be done to overgrown wisteria as well. In this case, wisteria trimming can be accomplished by lopping and cutting as much as you want, down to about 3 feet (1 m.) below where you really want the wisteria to be. This way, as new shoots pop up and it grows to that height, you will get nice new shoots the following spring. Remember that when you're pruning wisteria in this fashion, cutting it back that far will prevent any flowering for a few years to come while the new shoots mature once more.

After pruning wisteria, you will find that your wisteria trimming may have caused some larger branches to die back. This is alright. You can just take them out of the plant or cut them back all the way. It happens. and there is not much you can do about it. Never fear. It will not kill the plant.

Sometimes when it comes to how to trim a wisteria, some people feel that vigilant wisteria trimming will eventually cause an older wisteria bush to bloom, especially if it hasn't bloomed in a while. This may or may not be true, but might be worth trying.

When pruning wisteria, it does cause new growth and the flowers will eventually appear on newer growth. It just may take a few years to accomplish your goal.

Some people believe the best way to trim a wisteria, especially an older one, is to use a shovel and cut the roots. They feel that this actually helps the plant to absorb more nutrients from the soil and also to eventually flower. Again, you probably cannot kill it, so feel free to give this method a try as well!

Article summary: Wisteria can be grown from seed pods, but seed-grown plants may take 10–15 years or more to flower and often won’t match the parent plant. Seeds should be collected from mature pods, dried, soaked before planting, and sown in warm, well-draining soil until they germinate. For faster, more reliable blooms, wisteria is best propagated from cuttings rather than seed.

A member of the pea family, the beautiful and fragrant wisteria vine is native to China (Wisteria sinensis), Japan (Wisteria floribunda), and parts of North America. The U.S. began to import wisteria in the 1800s.

Wisteria has become a popular climbing vine for trellises, patio overhangs, fences, and buildings thriving best in USDA hardiness zones 4 through 9, depending on the variety. Graceful, drooping wisteria blossoms create a heady environment for courtyards, patios, and areas where summer shade is welcome.

Growing Wisteria from Seed

Although wisteria plants are fairly fast-growing, if you’re looking to propagate one from seed pods, you should know that when started from seed, they can take fifteen or more years to bloom, and the resulting plants don’t always hold true to the parent plant. Growing wisteria from seed can be fun, however, and may produce a lovely vine that will someday produce blooms.

If you want a blooming wisteria plant any time soon, it’s best to propagate one from cuttings. To get a clean cut, use a strong set of pruners like the Felco F6 (Amazon) which are capable of trimming small branches.

About Wisteria Seed Pods

If you open a wisteria seed pod, you’ll see seeds that are either fuzzy or smooth. The fuzzy seeds are from Asian varieties and the smooth seeds are North American. Asian wisteria varieties are the most aggressive and can be invasive. A healthy wisteria plant will produce seed pods in late summer and fall. The pods hang from the vine, just like peas.

To keep a mature wisteria plant blooming, it’s best to cut the seed pods off. Left alone, the pods will ripen, and you’ll have seeds shooting out several feet (about 1 m.) around the plant. Unless you want a wisteria farm, the seeds shouldn’t be allowed to sprout.

How to Grow Wisteria Seeds

It’s best to wait until fall to gather the seed pods you want to work with. Once the mature plant has lost its leaves, it’s time to choose your pods. Pick the pods before they’ve opened and place them in a warm, dry spot. You’ll need to allow them to dry completely until they become quite brittle.

When you’re sure they’re totally dry, twist them to release the seeds. If you want to wait until spring to start your seeds, just put them in a sealed container. When you’re ready to get the seeds started, soak them overnight in warm water.

Fill sterile starter pots with well-draining sterile soil, allowing one pot for every one or two seeds. Soak the soil until it drains thoroughly from the bottom of the pots. Plant the seeds one inch (2.5 cm.) or less deep and place the pots where they will be at least 65 degrees F. (18 C.).

Water the little pots as soon as the surface of the soil starts to dry. You can cover the pots with plastic until sprouts appear. Germination can take from one to two months.

When Should I Plant Wisteria Seeds?

Experts say wisteria seedlings can be planted outside in spring or summer if they have grown at least two sets of leaves or are 4 to 5 inches (10-12.5 cm.) tall. When planting, you’ll also need to be sure there are a full 45 days until the first frost is expected in your area.

Plant your seedlings in an area that gets full sun for at least six hours a day. Be sure the soil is well-draining and plant your seedlings near a wall, trellis, or fence. Since wisteria is a fast-growing vine that can grow 10 feet (3 m.) or more in a year, be sure to give your plant enough room to stretch out and climb.

Again, if you’re hoping for blooms any time soon and aren’t willing to wait up to fifteen or more years for flowers, cuttings will produce blooming wisteria plants much more quickly and the new plants will replicate the traits of the parent plant.

The fragrance and beauty of a mature wisteria vine is enough to stop anyone dead in their tracks -- those graceful, bunching flowers swinging in the spring breeze might even turn anyone into a plant lover. And there's a lot to love about wisteria, including its extreme hardiness in a world full of plant pests and diseases. The most common wisteria diseases are rarely serious, although a few rare wisteria problems may be deadly for the plant. Read ahead for a breakdown of the common causes of wisteria sickness.

Fungal Leaf Disease in Wisteria

The fungal leaf diseases commonly known as powdery mildew and leaf spot are frequently observed in wisteria, but they're not a major concern. Both may start as small yellow spots on leaves, but powdery mildew eventually develops a white, fuzzy coating that may engulf the whole leaf. Leaf spots don't generally spread, but they may dry out, turn brown or give affected leaves a shot hole appearance. Controlling wisteria vine diseases caused by leaf-invading fungus requires little more than plucking out the troubled leaves and pruning your wisteria more aggressively to allow better air flow. If the fungus is widespread, you may want to spray your plant with neem oil after thinning the canopy.

Crown and Root Problems

Unlike fungal leaf diseases, crown and root problems in wisteria are rarely minor. Crown galls, cankers, root rots and graft failures may result in the total collapse of your plant. These conditions usually cause plants to slowly fail, wilting all or part of the canopy, as the sick plant parts have increasingly less access to nutrients from the root system. Galls and cankers are unusual formations, either swollen knots or sunken areas that may weep sap. They can be cut out of branches, but if the crown of the plant is affected, there's no treatment. Graft failures may occur in plants as old as 20 years, due to a graft that was only ever partially compatible. Older plants may not be saved, but younger plants can sometimes be regrafted onto vigorous root stock if they're pruned back aggressively. Root rots, on the other hand, are preventable and may be treated in very young plants. Root rot occurs when plants are kept in constantly water-logged conditions. Early in this disease, decreasing watering may be enough to save your plant. As the disease progresses, you may have to dig the plant, trim the roots back to healthy tissues and replant it in a very dry location, watering only when the top two inches of soil feel dry to the touch. If a significant portion of the root is affected, your plant may not survive regardless of your efforts.

Wisteria Pests

A variety of pests nibble at wisteria leaves, but only the wisteria borer has been observed giving established plants any real problems. These tiny beetles cut perfectly round holes into the woody parts of the vine, where they may spend a significant portion of their lives. Once inside, they hollow out tunnels and galleries where females will lay their eggs. Borers can kill wisteria if they manage to tunnel across the transport tissues, effectively severing the roots from the plant. Control is difficult, so your best bet is to properly water and feed your wisteria if the infestation is small. Borers seek out plants that are stressed or weak, and usually avoid the healthy ones. If you only have a few borer galleries, probe them deeply with a long piece of stiff wire, killing eggs, larvae and adults within. Once borers are inside your tree, they are difficult to control with chemicals, although frequent applications of a broad-spectrum pesticide around borer holes will eventually kill them when the next generation emerges to find mates. Understand that this method will likely kill many beneficial insects and bees; it's far more environmentally responsible to remove the diseased wisteria and start again. Note: Any recommendations pertaining to the use of chemicals are for informational purposes only. Chemical control should only be used as a last resort, as organic approaches are safer and more environmentally friendly.

Don't let those beautiful, sweet-smelling blooms fool you. In spite of its beauty and fragrance, wisteria is a fast-growing vine that can quickly take over plants (including trees) as well as any buildings (like your home) if given the chance. For this reason, wisteria must be kept under control with regular pruning; otherwise, your only option may be getting rid of your wisteria altogether.

How to Control Wisteria

Unless you know how to control wisteria, this vine can quickly and easily choke out surrounding plants and other structures within its path. Learning how to cut back wisteria isn't difficult but may be a time-consuming chore. Nonetheless, vigorous pruning is about the only way to keep wisteria under control. You should lightly prune wisteria on a regular basis throughout summer to remove any unruly shoots as well as any new ones that may pop up. Wisteria should also be given extensive pruning in late fall or winter. First, remove any dead or dying branches and then cut backside branches about a foot (0.5 m.) from the main trunk. Look for and remove any suckers that may also be present near the base.

How Do You Kill Wisteria?

So how do you kill wisteria once it's gotten out of control? Getting rid of wisteria can be tricky but there are some things you can try. You could start by hand pulling or digging up any young sprouts. Cut the wisteria to the ground to prevent it from resprouting. Be sure to bag up and dispose of all wisteria branches (and seed pods) to eliminate the chance of new sprouts popping up somewhere else. Then, use a specially formulated herbicide such as a non-selective type, for getting rid of wisteria for good. Paint or apply the herbicide directly to the stump. If, over time, you notice any new sprouts, you may want to re-treat them. Only spray the foliage as a last resort to ensure the safety of other nearby plants. Alternatively, some people choose to place the leaves or as much of the vine tip as possible in herbicide solution for about 48 hours before cutting and removing the wisteria vine. Keep in mind that while most herbicides are designated for particular plants without harming surrounding areas, you should always use caution when using them. Follow directions carefully for the proper application. Herbicides for getting rid of wisteria are best used in late summer or fall. However, winter is probably the easiest time for wisteria removal. As long as you know how to control wisteria with regular pruning, you shouldn't have too many problems. However, if your wisteria has become overgrown or if you simply don't want it, then getting rid of wisteria may be your only alternative, cutting it down and soaking what's left in a suitable herbicide. Note: Chemical control should only be used as a last resort, as organic approaches are more environmentally friendly.

There's no mistaking the sweet fragrance of wisteria as it perfumes the garden – its beautiful violet-blue or lavender blooms cover this vine in mid to late spring. Wisteria is one of the most popular and spectacular flowering garden plants, producing magnificent hanging, grape-like clusters (racemes) of fragrant flowers that add a stunning effect to any garden or landscape.

Wisteria belongs to the pea family, Fabaceae. The genus includes ten species of deciduous climbing vines, two native to the southern United States and the others native to eastern Asia. It is a woody, high-climbing vine with a vigorous twining habit, fast growth rate, and long life span. Mature plants can reach 40–75 feet and require plenty of room and a very strong structure to climb on.

Wisteria can be grown as a vine, a tree, or a shrub. While growing wisteria is easy, you should take caution with it, as it can quickly overtake everything without proper care.

Growing Wisteria & Wisteria Vine Care

The most important factor to consider when growing wisteria is location. This vine requires sturdy support and regular pruning to keep it under control. Open areas surrounded by lawns that can be easily mowed are ideal.

Wisteria performs best in full sun. It can grow in a shady area, but it will not produce flowers. It requires deep, moderately fertile soil that is somewhat moist and well-drained, though it will tolerate a variety of soil conditions. It is important to keep the soil moist during the initial growth period, the flowering period, and during drought. Once established, wisteria is fairly drought-tolerant and requires little watering.

Because mature plants are very heavy, supports must be strong. Wisteria can easily overwhelm nearby structures and plants. The weight from wisteria can topple trees, and it may kill them by choking and shading them.

Wisteria does not require fertilisation.

Types of Wisteria

Two species are typically grown in home gardens:

Chinese Wisteria (Wisteria sinensis)

Chinese wisteria is a vigorous, fast-growing, long-lived ornamental climber native to China. It grows 40–75 feet tall and twines in a counter-clockwise direction around its support.

It produces 6–9 inch pendulous clusters of white, violet, lilac-blue or blue flowers in late spring, usually before the leaves emerge. All the flowers on a raceme open simultaneously and have an appealing fragrance. Chinese wisteria may bloom within four years after planting.

It is hardy in USDA zones 5–9 and tolerates a variety of soil and moisture conditions, though it prefers well-drained, loamy soil.

Japanese Wisteria (Wisteria floribunda)

Japanese wisteria twines clockwise around its support. It produces large 12–18 inch clusters of very fragrant flowers in white, pink, blue, or violet. Flowering usually occurs as the leaves are developing.

Japanese wisteria flowers are generally more prominent and more fragrant than those of Chinese wisteria.

Training Wisteria Vines

Wisteria is ideal for covering an arbor, pergola, gateway, trellis, or sturdy wall. Training vines properly makes them easier to control.

When training wisteria, select an upright stem and attach it to the chosen support. Remove any side shoots and continue to train the main vine upwards. New side branches can be trained as needed to fill in spaces by attaching them where desired. For best results, keep these side branches spaced about 18 inches apart.

Once the vine has reached the desired height, pinch off or cut the main tip to stunt its growth.

When to Prune Wisteria

Since it is an aggressive grower, pruning wisteria is essential to promote blooming and control size.

Regular pruning of new shoots throughout the growing season helps keep the vine manageable. Ideally, prune at least once a year, and preferably twice:

• In summer, after flowering, cut all whippy growths back to two or three buds from the main stem.
• In late fall or early winter, cut back whippy growths to about four buds from the branch from which they are growing.

Remove any dead or damaged wood, crowded branches and suckers from the base. Heavy pruning in late fall or winter helps maintain shape and encourages spring blooms.

Flowering and Seed Pods

Wisteria produces spectacular cascading flowers over a period of four to five weeks in spring. The pendulous racemes open sequentially from the base to the tip and resemble bunches of grapes. Individual flowers are pea-like and very fragrant.

Flowers may appear within four years after planting, but in some cases can take as long as 10–15 years.

Flowers are sometimes followed by decorative, velvety green seed pods that turn brown as they dry and may persist into winter.

Note: Wisteria seeds are poisonous and should be kept away from children and pets.

How to Propagate Wisteria Vines

Learning how to propagate wisteria vines is easy, but propagating from seed is not recommended. Although seeds may sprout within a few weeks if soaked overnight and planted, blooming may not occur for 10 to 15 years, if ever.

The best way to propagate wisteria is through cuttings taken in summer or by layering branches. When layering, choose a flexible branch and bend it to the ground, placing a few inches into the soil with a leaf node included. Secure it in place and allow it to overwinter. By spring, it should have developed enough roots for planting.

Cuttings and layering typically result in flowering within three to four years.

With proper training and regular pruning, growing wisteria doesn’t have to be a hassle. Provide strong support, full sun, and seasonal pruning, and you can enjoy this beautiful, fragrant climber for many years.