7 Best Fall-Flowering Clematis For Months of Abundant Blooms on Well-Behaved Vines – and One You Should Never Plant

Fall-flowering clematis are a joy, filling September with colorful blooms to refresh gardens after a long, hot summer. Most start blooming months earlier, so their fabulous flowers will carry a garden through that late-season gap when summer-flowering perennials are exhausted but many fall bloomers are yet to reach their peak. Some varieties even bloom through to the first frost, making these late-flowering clematis vines an indispensable element of designing a garden for great fall color.

What’s more, late-season clematis are the easiest of all vines to prune, even for beginner gardeners who’ve never picked up a pair of hand pruners before. In February or March, just as new growth appears, all the stems need snipping to around a foot or so above the ground, just above a bud – and that’s it! Because these vines all flower on new growth, this no-nonsense annual prune means blooms grow along the full length of the vining stems for a standout display. And, by reducing the stems to such a short length every year, the growth is easily controlled.

Fancy an abundance of showstopper fall flowers, year after year? Here’s our pick of the very best fall-flowering clematis vines to plant in every spot – plus the one you should never introduce to your garden.

1. Best For Fragrance: Sweet Summer Love Clematis

• Zones 4-9
• Part or full sun
• Grows 10 feet high and 6-10 feet wide

Don’t be fooled by the name of this fabulous climber, because while its heavy flush of flowers in July and August earns it a spot on our pick of best clematis vines for stunning summer flowers, it steadily carries on blooming all the way into October. While the myriad 2-inch flowers are very pretty, opening a cranberry-red and maturing to purple for a fabulous color-changing effect, their divine fragrance is the reason you should add this vine to your garden.

The scent is sweet and comforting, mixing warm vanilla with a nostalgic hit of almonds and cherries that will remind you of Jergens Original Scent Cherry Almond Lotion. And when you consider the size of this vine and what a heavy bloomer it is, you can begin to imagine the wonderful cloud of fragrance it brings to any backyard.

This clematis is better grown in the ground on account of its size. Don’t worry, though, as although it’s a vigorous grower it’s not invasive and was intentionally bred to be well-behaved, and has won numerous gardening accolades. By pruning it hard in early spring, you can easily control its size, too. And use its abundance to your advantage by allowing this vine to smother a sturdy archway, scramble over a pergola or disguise an ugly shed.

2. Best for Shade: Samaritan Jo Clematis

• Zones 4-9
• Full to partial shade
• Grows 4-5 feet high and 3-4 feet wide

Think all clematis need sun? Think again! Samaritan Jo clematis has been bred to flourish in full to partial shade, doing best with less than four hours of sunlight a day, and its silvery purple-edged petals light up a dark spot a treat. This vine is tough, too, and hardy down to -30°F, so don’t worry about it getting chilly in a shady corner. Because of its compact size, this beauty can be grown in a large planter as well as in the ground, adding to its versatility.

This well-behaved vine begins blooming in May and is still going strong in September, and often into early October for plenty of autumn flowers. Snipping off faded blooms and treating it to a diluted liquid tomato feed such as Espoma Organic Tomato!, available from Amazon, every couple of weeks will keep it flowering for as long as possible.

3. Best for Beginners: Happy Jack Purple Clematis

• Zones 5-9
• Part to full sun
• Grows 6-8 feet tall and 3-4 feet wide

If you’ve never grown a clematis before, or simply want an easy life, then you really can’t go wrong with Happy Jack Purple Clematis. It’s a new and improved version of the well-known Clematis ‘Jackmanii’ – which is already considered to be one of the most dependable clematis cultivars in the world!

Happy Jack Purple brings bigger flowers, measuring 3-5 inches across, and more intensely-colored plum-purple petals that almost look like they’re made of velvet. Its contrasting yellow stamens are brighter than its predecessor’s, too, and it flowers all the way from June to the first frost. And even then it’s not done! While the leaves fall from this deciduous vine as temperatures plummet, its seedheads have long, plume-like tails that become more fluffy and feathery as winter goes on.

Because Happy Jack Purple flowers on both new and old wood (yes, for double the flowers), prune it a little higher – to two feet from the ground – than our other fall picks in February or March.

This is one of those fabulous flowering plants that look like you spent hours gardening but practically grow themselves. So, if you have a friend with a birthday in August, you’ve just discovered the best-ever present!

4. Best For Flower Size: Lindsay Clematis

• Zones 4-9
• Part to full sun
• Grows to 4-5 feet high and 2-3 feet wide

If you want your friends, family and neighbors to stop in their tracks when they step into your garden, Lindsay clematis is for you. The elaborate flowers measure a whopping 6 inches across with vibrant violet-purple petals and magenta-red anthers. You’ll be surprised just how many blooms this vine can fit on its compact frame, too, making this a great choice for a small garden, and one of those easy-grow accent plants that landscape designers love.

While the main blooming period of Lindsay clematis is from May to July, it reliably produces a second flush in September that can last into October. Its compact size means Lindsay clematis will flourish in a pot as well as in the ground, and just imagine these showstopper blooms in a container by your front door.

5. Best For a Patio Container: Gisella Clematis

• Zones 4-9
• Full sun
• Grows 4-5 feet high and 3 feet wide

Gisella clematis is a real sun-lover, so won’t mind baking on a sundrenched patio or deck in a large container one bit. And it’ll put on quite the show, blooming from May right through September and into early fall. Because this clematis flowers on new wood, its five-inch flowers smother the plant from top to bottom, and they’re the most beautiful dusky pink hue that no cottage garden should be without. Its foliage is a darker green than most clematis vines, too, setting off those showstopper flowers a treat. As quick and clever ideas for containers go, this beauty is a winner.

Because of its compact size and shrub-like shape, Gisella clematis makes for a fabulous accent patio planter, too. And while this plant needs full sun for the most abundant display of flowers, it’ll appreciate having cool feet and well-draining but moist compost – easily achieved by regular watering and strategic positioning in the low shade cast by an outdoor sofa.

6. Best for Low-Maintenance: Jolly Good Clematis

• Zones 4-9
• Part to full sun
• Grows 6-7 feet tall and 2-3 feet wide

Living up to its name, Jolly Good is one of the most easy-going clematis vines to grow, and is another hybrid of the dependable ‘Jackmanii’. While it needs something to hold onto, it happily scrambles up a fence, trellis or post, using small leaf stems called petioles that act like miniature hands to hold onto supports. Because of its natural habit to grow tall but not very wide, Jolly Good tends to stay where you want it rather than rambling off in other directions, making this one of the best fast-growing vines that don't scramble out of control.

Its lovely lavender flowers begin in June and continue through September. Plant it in the ground and, as long as the soil is well-drained and you water it regularly, it won't care a jot if you’re on clay, loam, sand or chalky ground. Jolly Good is one of the best perennials for patio pots that bring maximum flowers for minimum effort, too.

7. Best for Abundant Blooms: Pink Mink Clematis

• Zones 4-9
• Partial to full sun
• Grows to 9-10 feet and 5 feet wide

Developed by Polish clematis master Szczepan Marczyński who is known for breeding hybrids with tremendous flower power, Pink Mink clematis was introduced 15 years ago. Since then, it’s certainly proved itself to be a prolific bloomer. Each of its bright pink flowers, the curved petals sporting a magenta stripe down their centres, measures 2-3 inches across, and a mature plant may boast a hundred flowers at any one time at its peak.

Pink Mink clematis starts with a heavy flush of flowers in June, then steadily repeat-blooms through till the end of September. This vine is the perfect Goldilocks size to grow over an arch or trellised garage wall, filling a once-bare spot with fabulous flowers, without ever getting out of hand.

And One Never to Plant: Sweet Autumn Clematis

While Sweet Autumn clematis isn’t classed as invasive in every state, it’s a fast and vigorous vine capable of reaching a huge 20-30 feet high and 10-20 feet wide, forming a dense blanket that can block sunlight from other plants. The real problem, however, is its overabundance of seeds that germinate far more easily and quickly than most other clematis.

Sweet Autumn clematis has become a major ecological concern across the eastern United States, Florida and parts of Canada, where it’s escaped from gardens to affect natural ecosystems, and is classed as an invasive species.

While this self-seeder is still widely sold for garden use in many states where it’s not considered invasive, it’s a thug and there are plenty of other fall-flowering clematis that are just as beautiful but won’t cause you any headaches. If you're shopping at a garden centre, be careful not to pick this Clematis terniflora up thinking it's the native Clematis virginiana, too: while the flowers of both are almost identical, the leaf margins of the native clematis are toothed while those of sweet autumn clematis are smooth.

Expert Tips For Planting Clematis in August

• All clematis need trellis or support wires to enable the vine to climb, or you can grow this vine up through a shrub or tree. Stems will twine themselves around their support, so there's no need to tie them in, unless you want to encourage them to spread out. You may need to guide new stems towards the trellis with bamboo canes.
• Clematis like moist but well-draining soil. So use a large planter that's at least 18 inches deep and wide, filled with a container potting mix such as Expert Gardener Potting Mix for Potted Plants available from Walmart. In the ground, dig a hole that's twice as wide and slightly deeper than the pot your clematis comes in, and improve the soil with compost or well-rotted manure, such as Black Kow Organic Compost and Manure available from Walmart, before planting.
• All clematis do better if their roots are kept cool, so use mulch, pebbles or low annual plants at the plant base. In a pot, you can arrange patio furniture to cast shade onto the container.
• Water deeply and regularly, immediately after planting and then once or twice a week.
• When adding a summer- and fall-flowering clematis to your garden in August, you'll want to avoid transplant shock, which may temporarily halt blooming. The more mature the plant, the less vulnerable it is, so buy the biggest container size you can afford. Stand the clematis pot in a bucket of water for 20 minutes to soak the rootball before you plant it. Try to disturb the rootball as little as possible when planting, and plant it 2-3 inches deeper than the original soil line.