<![CDATA[ Latest from Gardening Know How in Calla-lily ]]> https://www.gardeningknowhow.com/tag/calla-lily Mon, 22 Jun 2026 18:41:44 +0000 en <![CDATA[ Calla Lily Care Guide: Discover the Secrets to Growing Gorgeous Tropical Bulbs for a Stunning Summer Display ]]> https://www.gardeningknowhow.com/ornamental/bulbs/calla-lily/how-to-grow-calla-lilies.htm 8pnogPnwhMCAeTToyvxca7 Mon, 22 Jun 2026 18:41:44 +0000

Calla lilies provide a touch of the tropics to summer gardens. Though gardeners in far southern climates can grow these beautiful flowers year-round, most of us have to accept that they'll only grow as annuals.

The other option is to dig up plants each fall and overwinter them, then replant them each spring as you would any other summer garden bulbs. Alternatively, you can grow calla lilies in containers indoors.

I'll walk you through the basics of caring for calla lilies indoors and out, no matter where you live.

Quick Calla Lily Facts

Botanical Name

Zantedeschia aetheopica

Plant Type

Tender perennial

Height

12-24 in (30-61 cm)

Spread

18-24 in (46-61 cm)

Light

Full sun, part shade

Soil

Neutral, slightly acidic

Hardiness

USDA 8-10 (Not in the US? Convert your zone)

Flowers

Summer

Native Range

Southern Africa

Planting Calla Lilies

Calla lily plants make a beautiful addition to the ornamental landscape. Though the graceful white calla lily flowers are the most common, available cultivars come in a wide range of colors.

Below, we will explore the basic needs of this stunning perennial in greater detail, as well as information for planting them in the garden and indoors in containers.

White calla lilies

(Image credit: Shutterstock)

Soil Requirements

Calla lilies should be planted into well-amended beds with good drainage. Since they are quite adaptable, the rhizomes will grow well under a wide range of soil conditions, including those that consist of sand or clay. Their ideal garden soil should be neutral or slightly acidic with a pH of 5.6 to 6.5. You can test the pH with soil test kits, like this one on Amazon.

To successfully grow callas indoors, the plants can be placed into containers filled with a high-quality indoor potting mix, like this one from Miracle-Gro.

Light Requirements

Calla lilies grow best where they can receive part sun or full sun throughout the day. Ample light is essential to the production of flowers.

Still, gardeners living in areas that are especially warm or receive intense sunlight may want to consider planting calla lilies in beds that are shaded throughout the hottest parts of the afternoon.

symmetrical garden design with black trellis on white walls and climbing plants, with sculpture, water feature, topiary and calla lilies

(Image credit: Andreas von Einsiedel/Getty Images)

Watering

Caring for calla lilies includes paying special attention to soil moisture. Indoor plants, as well as those grown directly in the garden, appreciate consistent moisture throughout the season in addition to adequate humidity.

In regions that receive regular rainfall, watering calla lilies in the garden is not often required once plants are established. However, the plants can benefit from drip irrigation, like this Rain Bird Watering Kit from Amazon, or soaker hoses in regions that are especially dry or prone to prolonged periods of drought.

Temperature & Humidity

Calla lily plants grow best where conditions are warm with temperatures of at least 70°F (21°C) during the day. Humidity in the environment also plays a key role in maintaining adequate levels of moisture.

Calla lily flowers can tolerate high temperatures in most gardens, provided the humidity conditions are ideal. Extreme heat can be detrimental to the plant, however, in regions that are dry or arid.

young calla lily plant in garden

(Image credit: Tatiana Terekhina / Getty Images)

Fertilizing

You will need to fertilize calla lilies to keep them looking their best. Well-balanced fertilizers can be used any time before the plants start to flower. Both granulated and liquid feeds are good options, depending upon one's specific needs. This organic bloom-boosting fertilizer from Espoma is a good option.

As with most perennials, make certain to avoid using fertilizer after the plant has finished blooming.

Pruning

Calla lily flowers can be removed as they begin to fade from the plant. Deadheading calla lily flowers prevents the production of seeds and encourages repeat blooming.

Each spent flower stem should be removed carefully all the way back to the base of the plant. Dead or yellowing foliage can also be pruned in this manner, which helps to maintain a healthy and tidy appearance in garden beds.

woman pruning calla lily in garden

(Image credit: AegeanBlue / Getty Images)

Calla Lily Varieties

You can find a wide array of calla lily bulbs from Home Depot and your local garden center to grow in your garden. These are some of the most common varieties of calla lilies to look for:

  • 'Crystal Clear' Calla Lily
  • 'Garnet Glow' Calla Lily
  • 'Odessa' Calla Lily
  • 'Morning Sun' Calla Lily
  • 'Picasso' Calla Lily

calla lilies in garden

(Image credit: Katrin Ray Shumakov / Getty Images)

Propagation

Though it is possible to grow calla lily plants from seed, most gardeners prefer to divide those that have already established themselves in the garden. This can occur every three to five years and will result in flowers that are identical to the parent plant.

You should divide calla lilies in the fall while each plant is dormant. After carefully lifting rhizomes from the soil the roots can be cut apart. New divisions should have at least one healthy, viable growing eye.

Common Problems

While care for these plants is relatively simple, there are some common problems with calla lilies that gardeners need to be aware of.

Notable among these are diseases that directly affect the plants' rhizomes and foliage. Root rot, powdery mildew, and various kinds of wilt may be the direct result of excess moisture.

Several types of pests may also target calla lily plants. Slugs and Japanese beetles are the most problematic.

Container Care

Calla lilies are common houseplants because they do well growing in containers. But they will need occasional repotting to perform their best. If you grow calla lilies in pots, they will outgrow their containers and require repotting once every one or two years. Do this in the fall when the plants are dormant.

During repotting, you can also divide mature plants and replant them into new containers. Or you can just move your overgrown plant into a larger container that's about 1 inch (2.5 cm) larger in diameter than the old pot.

potted calla lily on patio

(Image credit: Nico De Pasquale Photography / Getty Images)

Frequently Asked Questions

Are calla lilies toxic?

All parts of the calla lily plant are extremely toxic. Calcium oxalate and other chemical compounds may be fatal if ingested. Extreme caution should be taken when they are planted near children and pets, as well as when being handled by growers. 

Calla Lily Care Must-Haves

Hybrid Calla Lilies Mixed Value Pack - 5 Bulbs/pkg - Bright Colors Red, Orange, Yellow, Pink
Willard & May Hybrid Calla Lilies Mixed 5-Pack

Get a gorgeous mix of calla lily bulbs for your summer garden from Amazon.

Flora Guard Bulb Planter With Depth Markers - Automatic Soil Releasing Seed Bulb Transplanter for Planting/digging Tulips, Daffodils, Dahlias and More
Flora Guard Bulb Planter With Depth Markers

Make planting calla lily bulbs quick and easy with this handy bulb planter tool.

Jobe’s Organics Granular Bulb Fertilizer, Organic Bulb Fertilizer for Tulips, Daffodils, and Other Bulbs, 4 Lbs Bag
Jobe’s Organics Granular Bulb Fertilizer

Give blooms a boost with this specialized organic bulb fertilizer.

]]> <![CDATA[ Calla Lily Care Indoors: How To Grow This Tropical Beauty As A Houseplant ]]> https://www.gardeningknowhow.com/houseplants/hpgen/indoor-calla-lilies.htm 3P9SbHVchTZVsrTx8FH9nB Sat, 09 Jan 2021 22:00:00 +0000 Thu, 05 Feb 2026 18:10:56 +0000

Calla Lily Care Indoors: Growing Calla Lilies As Houseplants

Calla lilies are not true lilies, but are related to Caladium and Jack-in-the-pulpit that can grow up to 3 feet (91 cm) tall and 2 feet (61 cm) across. There are 8 species and numerous cultivars ranging in bloom color from yellow-gold to purple to burgundy to the more usual white.

White calla lilies (Zantedeschia aethiopica) are native to Africa where they are considered weeds. Here they have come to be known to represent resurrection and rebirth, often featured in Easter arrangements as well as a traditional choice for funeral arrangements.

Do Calla Lilies Do Well Indoors?

If you have a tendency to over rather than under water your houseplants, the calla lily might be the houseplant for you. You might think of calla lilies as being the province of the outdoor garden, but a calla lily houseplant is easy to care for and rewards the grower with its stunning trumpet-shaped blooms. Calla lily care indoors may also be due to winter temps in your region since you can lift the plant from outside and overwinter it indoors. Keep reading to learn how to care for calla lilies indoors.

Calla lilies do very well as indoor houseplants. calla lilies do very well as indoor houseplants.

Calla Lily Indoor Care

In nature, callas are found in streams and ponds or along their banks. In the landscape they thrive in wet, boggy areas and can even be grown as semi-aquatic specimens. Conditions don’t have to be quite this wet for them to thrive as houseplants however.

Light

Grow calla lilies in at least 6 hours per day of bright indirect light. Full sun can cause the plant to become sunburned. Callas may grow leggy with insufficient light or foliage may burn with too much direct light.

Water

Calla lilies are rather diva-like when it comes to water. They like a lot of irrigation and yet too much will result in root rot. With that said, never let the plants soil dry out, this may mean watering once or twice a week. Make sure your container has good drainage holes since overly wet soil can foster fungal disease.

Alternatively, these self watering pots from Amazon have drainage holes and a bottom watering design which will prevent root rot.

Temperature & Humidity

Calla lilies thrive in temperatures between 60-80 F (16-27 C) during the day and no lower than 55 F (13 C) at night.

They do like a significant amount of humidity which can be taken care of in a couple of ways. Situate the plant near a humidifier, mist the plant or place the container atop a saucer filled with water and pebbles.

Soil

Good quality, nutrient rich, well-draining potting soil.

Fertilizer

Calla lilies can bloom from 6-12 weeks depending upon the cultivar. In order to produce their large colorful blooms, they need plenty of nutrients, but like Goldilocks, just the right amount.

So when you fertilize your calla houseplant, err on the low side. That is, fertilize frequently but with dilute amounts of fertilzier. Use a 10-10-10 fertilizer, diluted by half the recommended amount every two weeks.

Problems, Pests & Diseases

As with all plants, indoor calla lilies are prone to some pests, but not as many as when grown outdoors. They may become afflicted with aphids, mites, and mealy bugs.

Because providing the right amount of water is paramount for successful calla lily growth, especially when grown in containers, the plant has a tendency to develop fungal diseases, specifically root rots.

Pruning

Prune the dying blooms from a calla lily and any dead or yellowing leaves as needed. Leave the healthy green leaves post bloom to continue to photosynthesize and store energy for the next years bloom. Use a good set of pruners, like the Felco F6 Hand Pruners from Amazon, for a quick, clean cut.

Propagation

Calla lilies grow from rhizomes underground. To propagate them, simply dig the plant up and divide or separate the rhizomes. Repot or redistribute the separated rhizomes.

Callas can also be grown from seed, however, do not expect any flowers for another 2-3 years. To sow calla seeds, plant the seeds in the spring. Seeds should be sown 3 inches (7.5 cm) apart. Keep the seeded area moist and in an area of about 70 F (21 C).

Repotting

If you see rhizomes lifting out of the soil, its time to repot. Remove the plant from its existing pot and then carefully separate the rhizomes with sterile sharp shears or a knife. Repot the calla lily divisions separately outside or in additional pots.

Best Indoor Calla Lily Varieties

There are some calla lily varieties that are more suited for use as houseplants. Calla lily Morning Sun is a cheerful variety with sun-kissed hues of color, while Odessa callas bear deep purple almost black blooms.

Golden calla is a large bloomer, producing a 6-inch yellow flower atop white speckled foliage. Similar to Golden is Copacabana, another calla bearing sunny yellow blooms.

Other options include but are not limited to Picasso, Garnet Glow, Acapulco Gold, Pink, Beatrix, Captain Romance, and Black Magic.

FREQUENTLY ASKED QUESTIONS

How Long Do Potted Calla Lilies Last Indoors?

Calla lilies will grow and bloom for about 3 weeks to several months. Once the bloom has died back, allow the plant to go into dormancy. This means quit watering, allow the foliage to die back, and place the plant in a dark area that’s below 50F (10 C) but above freezing. Just ignore it for 2-3 months and when the time has elapsed, bring it back into the light and warmth and begin to water and feed it.

Where Should You Put Calla Lilies Indoors?

Calla lilies like bright but indirect sunlight with average home temperatures. Do not place your calla in full sun. Keep it away from central heat or A/C vents which will dry the plant out too quickly.

]]> <![CDATA[ Planting A Calla Lily In A Pot: Care Of Container Grown Calla Lilies ]]> https://www.gardeningknowhow.com/ornamental/bulbs/calla-lily/container-grown-calla-lilies.htm 22k79hGQB5dYhCk5C23qyM Sun, 11 Mar 2018 01:00:08 +0000 Fri, 29 Mar 2024 10:45:24 +0000

Calla lilies are popular cut flowers for wedding floral arrangements and bouquets. They are also used as decorations for Easter. Native to Africa, calla lilies are only hardy in the warmer U.S hardiness zones of 8 through 11 – but may survive zone 7 with protection. 

They also bloom primarily in summer. Due to the bloom time and plant hardiness, many gardeners find it easier to grow potted calla lily plants. Continue reading to learn more about container grown calla lilies.

Planting a Calla Lily in a Pot

The calla lily (Zantedeschia aethiopica) is not a true member of the lily or Lilium family. They are rhizomatous summer-blooming plants, which are commonly grown like other summer-blooming bulbs, such as canna or dahlia. Calla lily rhizomes, which look somewhat like small potatoes, are planted in spring after the danger of frost has passed. 

By growing calla lily in a pot, in some locations, they can be started indoors earlier than they could be started outdoors. This can allow you to immediately place established, ready-to-bloom, container grown callas on the deck or patio earlier in the spring. 

Container grown calla lilies can also be planted early and manipulated to bloom in time for Easter or spring weddings. Another benefit of growing calla lilies in pots is that in garden beds in their ideal climate callas may naturalize, take over, and even become invasive. 

Container grown callas are restricted to pots and cannot become invasive. In cooler climates, potted calla lilies can simply be deadheaded, treated for insects, and then taken indoors for winter and grown as houseplants. 

Like other summer bulbs, calla lily rhizomes can also be dug up and stored in dry peat moss in a dry, dark location that does not get any cooler than 45 degrees F. (7 C.).

How to Grow Calla Lilies in a Container

Calla lily rhizomes grow best when planted 1 inch (2.5 cm.) deep and 1 to 2 (2.5-5 cm.) apart. Pots for calla lilies should be at least 10 to 12 inches (25-31 cm.) in diameter and well-draining. 

While calla lilies need consistently moist soil, improper drainage can cause rots and fungal diseases. The planting medium should also retain moisture but not stay too soggy. Container grown calla plants are usually watered when the first inch or two (2.5-5 cm.) of the soil is dry to the touch. They should then be watered deeply and thoroughly. 

Brown foliage tips can indicate overwatering. Calla lily in pots will also benefit from a general-purpose 10-10-10 or 5-10-10 fertilizer every three to four weeks in spring and summer. When blooming is finished, stop fertilizing. Calla lilies grow best in full sun to part shade. In containers, it is recommended that calla lilies be placed in a location where they can receive about six hours of sunlight each day. 

The ideal temperatures for container grown calla lilies are daytime temperatures between 60 and 75 degrees F. (15-23 C.) and nighttime temperatures that do not dip below 55 degrees F. (12 C.). If potted calla lilies are taken indoors and grown as houseplants through the winter, these ideal temperatures should be maintained.

]]> <![CDATA[ Calla Lily Hardiness: Will Calla Lilies Come Back In Spring ]]> https://www.gardeningknowhow.com/ornamental/bulbs/calla-lily/will-calla-lilies-come-back.htm 332tYXkgTfsyuuYaRTLrWt Sun, 24 Dec 2017 01:00:38 +0000 Wed, 06 Dec 2023 18:41:46 +0000

The beautiful calla lily, with its elegant, trumpet-shaped blooms is a popular potted plant. It is especially a top choice for gifts and if you find yourself having been gifted one, you may be wondering what to do with it next. Is keeping callas year-round possible or is it a onetime beauty? Let us help you figure it out.

Are Calla Lilies Annual or Perennial?

Many people treat their gift calla lilies as annuals. They receive a potted flower, or buy them for spring decorating, and then toss it when the blooms are done. In truth, though, calla lilies are perennials, and you can actually save your potted plant and watch it bloom again next year. Will calla lilies come back? It depends on how you treat your plant and where you put it for the winter.

Calla Lilies in Winter

Keeping callas year-round is possible, but how you treat your plant to get blooms again next year will depend on your hardiness zone. You can rely on calla lily hardiness through zone 8 or maybe 7 at a stretch. If you live somewhere colder, you will need to bring your plant indoors for the winter. One solution is to keep your calla lily potted. You can take it outdoors for a patio plant in the summer and bring it in again before the first frost. You can even allow it to go dormant for the winter by simply not watering it until the spring. Another option is to put your calla in the ground in your garden in the spring or summer, after the last frost, and to remove it before the first frost of the fall or winter. To do this, dig up the plant and keep it dry until the leaves brown. Remove dead leaves and store the bulb in dry soil or sand. Make sure it stays around 60 to 70 degrees F. (15-21 C.). Replant the bulb outdoors in the spring. If you do keep your calla lily year-round in a pot and it begins to decline, producing fewer flowers, you may have a case of crowded rhizomes. Every few years, divide the plant into three or four sections to store for the winter. Next spring you will have a larger quantity of healthier plants. Calla lilies are perennials, not annuals, and with just a little extra effort you can enjoy your flower year after year.

]]> <![CDATA[ Calla Lily Varieties – Information About Different Calla Lily Plants ]]> https://www.gardeningknowhow.com/ornamental/bulbs/calla-lily/calla-lily-varieties.htm iXRdW4qs8ZKoefd5D8s5KB Sat, 16 Dec 2017 01:00:11 +0000 Wed, 06 Dec 2023 18:41:46 +0000

Calla lily plants produce classically beautiful flowers, prized for their elegant, trumpet-like shape. The white calla lily is one of the most well-known and popular varieties, but if you’re a fan, check out the many other colorful options.

About Calla Lilies Plants

Calla lilies are not true lilies; they belong to the Arum family of plants and the genus Zantedeschia. There are six different species of this flower, which hail from South Africa and that have become popular for growing in the garden and for cut flowers around the world. Both in beds and in containers, all types of calla lily make for an elegant addition. In general, calla lilies prefer full sun or partial shade and rich, moist, well-drained soil. In warmer climates without winter frost, these flowers will grow like perennials. In colder areas, they are tender bulbs that can be planted each year, or that can be brought indoors to remain dormant for the winter.

Calla Lily Varieties

There are many different calla lily types and varieties, with a range of heights between about 1 and 3 feet (31-61 cm.), and many choices for brilliant colors:

  • ‘Acapulco Gold’ – For the sunniest yellow calla lily, choose this variety. ‘Acapulco gold’ produces large blooms that are bright yellow.
  • ‘Night Life’ and ‘Night Cap’ – For a rich, deep shade of purple, try either of these varieties. ‘Night Life’ produces a larger flower that is darker and bluer in tone, while ‘Night Cap’ is a smaller flower in a redder shade of deep purple.
  • ‘California Ice Dancer’ – This variety of calla lily produces large, perfectly creamy white flowers on stalks that grow about 18 inches (46 cm.) tall. The leaves are a darker shade of green than most varieties, perfectly offsetting the white blooms.
  • ‘California Red’ – California Red is a gorgeous shade of deep reddish pink, neither too bright nor too dark.
  • ‘Pink Melody’ – This variety produces a triple-toned flower that goes from green to white to pink as it extends from the base of the bloom. This is also a tall calla lily, growing up to 2 feet (61 cm.) in height.
  • ‘Crystal Blush’ – Similar to ‘Pink Melody,’ this variety is whiter with just a hint, or blush, of pink on the edges of the petals.
  • ‘Fire Dancer’ – One of the showiest of all the varieties of calla lilies, ‘Fire Dancer’ is large, and a deep gold edged in red.

With all these calla lily types, you can hardly go wrong. These are all beautiful flowers, and they can be used to complement other plants in your garden or together to create a stunning variety of multi-colored and regal blooms.

]]> <![CDATA[ Top 10 Questions About Calla Lily Plants ]]> https://www.gardeningknowhow.com/top-10-qa/top-10-questions-about-calla-lily-plants 7794D1zhNmvNoLk4agH1qL Sun, 26 Nov 2017 13:00:00 +0000 Thu, 01 May 2025 10:10:16 +0000

Calla lilies add interest and tropical flair to both indoor and outdoor gardens, but these beautiful flowers are not without their share of troubles. Gardening Know How tries to provide the best information possible not only for growing healthy plants like this, but also to answer whatever gardening questions you may have along the way.

Here are the top questions about calla lilies.

1) How to care for potted calla lily plants? Potted calla lilies are often given as gifts. If you've received a calla lily and do not live in a warm enough climate to plant it outdoors, it will need a little extra care to grow well indoors.

Calla lily care, indoors or out, is pretty much the same - they need a lot of light. Place indoor calla lilies in a location where they will receive plenty of sunlight but are protected from drafts. Indoor callas also need a lot of water and regular feeding. Water thoroughly whenever the top layer of soil looks dry or the plant looks limp. Fertilizer indoor calla lilies once a month with a balanced general-purpose fertilizer. Indoor plants will also need a rest period to grow and bloom properly. To simulate dormancy, stop watering your potted calla after it blooms, allow it to die back, then place it in a cool (but not cold), dark location for two months. After its rest, return it to a location with bright light and water it regularly.

2) Why are calla lily blossoms turning green? Calla lily blooms that turn green after flowering for a while is a common and natural condition. As calla flowers mature, the plant's energy is focused on seed production. As the plant sets seeds, the flowers and other parts of the plant will die back from lack of energy and nutrients.

Simply deadhead spent blooms so energy is not wasted on seed production. After blooming, your calla lily will require a rest period. Outdoor plants will do this naturally, but indoor plants may require a mock dormancy period.

3) Why are calla lily leaves turning yellow? Yellowing leaves on any plant is usually a sign of nutrient deficiencies or improper watering habits. If your calla lily leaves are yellowing, first consider the timing. If the plant has just finished blooming, it could just be taking a natural rest period; simply cut it back and allow it to go dormant.

Also consider your fertilizing routine. Calla lilies should be fed once a month with a balanced general purpose fertilizer. They do not require feeding while dormant, but if you are not fertilizing them regularly the rest of the time, you should start. Callas also require full sun. Indoor plants can yellow from insufficient light. Indoor and outdoor calla lilies require regular watering, but these plants are pretty good at letting you know when they are thirsty by looking limp. Always water calla lilies deeply, as just a little spritz now and again won't do.

4) Why is my calla lily plant drooping? The most common reason for a drooping calla lily is lack of water. Calla lilies have high water needs. Always water outdoor calla lilies deeply and thoroughly when you water them. A nice long, slow trickle with a soaker hose allows the plant to soak up more of the water than a drenching blast.

Indoor calla lilies should be watered deeply whenever the top layer of soil looks dry. Again, a slow watering works best, allowing water to seep out from the pot's drainage holes. Calla lilies can also get droopy when they go into dormancy. This is just a natural and necessary process for the plant.

5) How to care for calla lily in winter? Calla lilies are not cold-hardy, and generally only thrive year round in U.S. zones 8 or above. If you live in zone 8 or above, the only winter care required for callas is to stop watering them so they can go dormant. You can protect them from low temperatures with a nice heap of mulch over the root zone. In zones 7 or lower, you will have to grow calla lilies as a container plant or as tropical bulbs, like canna or elephant ear. If container grown, move the plant indoors and stop watering. Give it a dormancy period in a cool, dark location for about two months in winter. Treated as other tropical bulbs, dig up the rhizomes in fall, cut off any foliage and let them dry out. Store the bulbs through winter in a dark, dry location where temperatures stay between 50-55 degrees F. (10-13 C.).

6) How to make a calla lily bloom? If an indoor calla lily no longer blooms or fails to at all, it could be lacking nutrients or it could simply need a rest period to store up new energy and regenerate.

You can simulate a dormancy period in winter by not watering your calla lily and storing it in a cool, dark location for about two months. Outdoor calla lilies will die back naturally and go dormant when they need to. If your calla lilies have properly rested but still refuse to bloom, they could be lacking phosphorus. Try a bloom-boosting fertilizer or bone meal to balance its nutrient needs. Then fertilize it regularly with a well-balanced fertilizer.

7) When and how to divide calla lilies? Calla lilies are rhizomatous plants, which makes them very easy to divide.

If calla lilies are not hardy in your zone but you grow them as annual bulbs, in fall when your calla lily begins to rest for winter, dig up the rhizomes and cut back any foliage still left on the plant. Let the rhizomes dry out and store them in a dark, cool, dry place throughout winter. In spring, when you take them out to plant them, simply cut apart any young rhizomes growing off of older ones and plant the individual pieces. If calla lilies are hardy in your area, simply dig the plant up in early spring, while it is still dormant. With a clean, sharp knife, cut apart new rhizome growth and plant them individually.

8) What causes calla lily blooms not to open? If calla lilies are not blooming properly, they could need a boost of phosphorous. You can give them a little extra phosphorus by adding bone meal or feeding them with a bloom boosting fertilizer. A bloom boosting fertilizer will have a higher middle number in its NPK ratio; for example, 5-15-5. It is especially important that fertilizer for blooms has very little nitrogen in it, as nitrogen promotes green, leafy growth rather than blossoms. To start your calla lily out with healthy blooms, feed it bone meal each spring.

9) What is growing inside my spent calla lily flower? As calla lily flowers mature and fade, they form seed pods. If you are seeing new growth in a spent calla lily flower, it is most likely this seed pod. You can simply deadhead these spent flowers, sending the plant's energy to its foliage and rhizomes to create new flowers.

If you'd like to try your hand at growing calla lilies from seed, you can leave the seed pods on the plant until they mature and dry out. Propagating calla lilies from seed is a very slow going process that requires a lot of patience; therefore, it is easiest and quickest to propagate them by divisions.

10) Why are the leaves on calla lily dripping liquid? When calla lilies are over-watered, they may ooze or transpire excessive liquid. This is called guttation. Calla lilies should only be watered as needed.

To check if a calla lily needs water, stick your fingertip in the soil. If it feels dry, then water it thoroughly; if it feels wet, do not water it until the soil dries out.

Calla lilies are also good at letting you know when they want water by going limp. Oozing on plants can also be a sign of pest or disease. If it seems that only one wounded looking area of your calla lily is oozing, I suggest snipping that infected part off, disposing of it and treating the whole plant with neem oil.

We all have questions now and then, whether long-time gardeners or those just starting out. So if you have a gardening question, get a gardening answer. We're always here to help.

]]> <![CDATA[ Feeding Calla Lilies : How To Fertilize Calla Lily Plants ]]> https://www.gardeningknowhow.com/ornamental/bulbs/calla-lily/feeding-calla-lily-plants.htm s7acqBTf2aPAA3ZNCFD4Dr Sun, 22 Oct 2017 13:00:25 +0000 Wed, 06 Dec 2023 18:43:19 +0000

Few flowers have the elegance and simplicity of the calla lily. While not a true lily, callas are an integral part of weddings and funerals alike, their classic flowers representing love and devotion. Callas can get waist high and need plenty of water and a high phosphorus fertilizer. Fertilizing calla lily plants not only enhances overall health but promotes more and bigger blooms. Calla lily fertilization should also be done at planting.

Calla Lily Feeding at Planting

Feeding calla lily plants at planting and again each spring can help promote huge blooms with more flower production. Avoid high nitrogen feeds that will encourage foliar development but reduces flowers. These South African natives are heavy water users and require plenty of the right kind of nutrients for maximum flowering and healthy growth. Some tips on how to fertilize calla lily will ensure beautiful flowers and erect, vigorous plants. Calla lilies grow from tubers. Just like bulbs and corms, these are underground storage organs that contain all the material the plant needs to produce leaves, stems, and flowers. The tubers need to be plump, free of blemishes, and injury. Inspect your tubers every year if you have to lift them and overwinter tubers indoors. When you are ready to plant them in spring, prepare a well-draining garden bed or plant them in a container with good potting mix. Incorporate well-rotted compost, bone meal, or cow manure into the soil to begin a gradual feeding process. You may also want to give the tuber a bi-weekly diluted fish emulsion to stimulate growth. Remember, feeding calla lily plants is only part of the equation. These are water lovers and must never be allowed to dry out.

How to Fertilize Calla Lily Annually

In southern climates, calla tubers can remain in the ground and will produce foliage year-round. In northern climes, these tender tubers should be lifted and stored indoors in a cool, dry location until spring or all danger of frost has passed. Plants that remain in the soil benefit from mulch over their root zone. This will slowly compost into the soil, enriching it while it also conserves moisture. For an annual calla lily feeding, use an organic product or a time release blend. These deliver nutrients at a slow rate which the plant can easily uptake. You can also incorporate bone meal around the root zone to add phosphorus which enhances blooming. A high phosphorus formula may be used in spring for calla lily fertilization, but keep in mind this only delivers a high dose of one macro-nutrient and the plant will need a balanced feeding for overall health.

Other Calla Lily Nutrient Needs

Calcium is another crucial nutrient for calla lilies. It may be necessary to perform a soil test to determine if your garden soil has adequate calcium in it. For natural sources of calcium, the bone meal also works, as do eggshells. You may incorporate gypsum or lime to the soil as well before planting the tubers. This should be done at least six months prior to installing the tubers, so it takes a little pre-planning. The plant needs nitrogen too, but avoid high nitrogen formulas which promote leaf and stem formation. Instead, use good compost which has a balance of nitrogen and carbon. This natural, slow release product will feed the tubers for a year as it gradually works into the soil.

]]> <![CDATA[ Calla Lily Watering: How Much Water Do Calla Lilies Need ]]> https://www.gardeningknowhow.com/ornamental/bulbs/calla-lily/calla-lily-watering.htm gGKD1aZbjSpp494B9CTUEh Wed, 04 Oct 2017 17:00:09 +0000 Wed, 06 Dec 2023 18:44:00 +0000

Calla lily (Zantedeschia aethiopica) is a distinctive, long-blooming plant with impressive trumpet-shaped flowers atop sturdy green stems. This South African native, which can reach mature heights of 3 feet (1 m.), is considered a marginal aquatic plant, which means it grows in moist soil along riverbanks, ponds or streams, or around the edge of a water garden or rain garden. While calla lily is a relatively low-maintenance plant, it won’t tolerate excessively dry conditions or soggy, poorly drained soil. Read on to learn about calla lily water requirements.

When to Water Calla Lilies

Your calla lily's watering needs depend on whether they are grown in the garden or in containers. Your current growing conditions, like the amount of light or soil type, should be factored in as well. How much water do calla lilies need in the garden? Water outdoor calla lilies regularly, providing sufficient water to keep the soil evenly moist. If the soil doesn’t drain well, improve it by adding compost or other organic materials. How to water calla lilies in pots? Potted calla lilies should also be watered frequently to keep the potting mix evenly moist but not soggy. Use a well-draining potting mix; although calla lilies like moisture, they don’t do well in saturated, poorly drained soil. A soilless mix containing coarse materials, such as pine bark, mulch, or sand, can provide proper drainage. Remember that calla lilies in pots will dry out much more quickly than lilies planted in the ground.

Tips on Calla Lily Watering

Whether your calla lilies are planted in the ground or in pots, it’s important to avoid extremes in moisture. Keep the soil or potting mix evenly moist, as alternating between too dry and very wet may cause the tuber and roots to rot. Reduce watering in late fall, when blooming stops and the leaves begin to turn yellow, to allow the plant to safely enter dormancy. Resume regular watering after a two- or three-month dormant period. If the leaf tips of your calla lily are turning brown, you may be watering too much. Brown leaf tips may signal excessive fertilizer.

]]> <![CDATA[ Calla Buds Not Blooming – Reasons Why Calla Lily Buds Don’t Open ]]> https://www.gardeningknowhow.com/ornamental/bulbs/calla-lily/calla-buds-dont-open.htm irJyHnzHCtE9A66evZ5KfF Tue, 27 Jun 2017 21:00:22 +0000 Wed, 06 Dec 2023 18:46:13 +0000

It’s generally very easy to grow these showy flowers, but when calla lily buds don’t open, you miss out on their beauty. Getting buds to open on callas is not typically difficult, but there may be a few easy-fix problems going on with your plant. Tweaking one or two things should help you get your blooms back.

Why Doesn’t My Calla Lily Bloom?

As long as a calla lily is planted in the right spot and gets the right growing conditions, it should produce abundant blooms. On the other hand, if you have calla lilies not blooming, specifically if they bud but don’t open, then this may indicate a problem with the plants’ conditions:

  • The soil where your plant grows may be too dense or may contain too much heavy clay.
  • Your calla lily may be planted too deep in the soil.
  • You may be overwatering or underwatering your calla lily.
  • Your calla may need a little fertilizer to give it the necessary nutrients.

Another possibility for why your calla lily buds don’t open may be that it was forced to bloom early at the nursery. This may be the case if this is the first year you put the plant in your garden. If so, you will simply have to wait for next year to get more blooms.

How to Get Blooms on Calla Lilies

Once you have determined the potential reason that your calla lily isn’t blooming, fixing it should be simple. For instance, when watering, remember that these plants like moist soil that isn’t too soggy. Water it regularly, but make sure the soil drains well. If drainage or heavy soil is the issue, you may just need to transplant the calla lily to a better location in your garden.

If neither of these is the problem, try fertilizing your calla lily to get more blooms. Use a balanced fertilizer in early spring. It’s also important to know that the bulb of the calla lily stores nutrients over the winter, which come from the leaves. Don’t trim the leaves on your plant until they yellow or die, or you could be cutting off its nutrient supply.

"Why doesn’t my calla lily bloom?" is an easy question to answer. There are just a few simple things that you can try to make sure you get more blooms to enjoy throughout the growing season.

]]> <![CDATA[ Transplanting Calla Lilies: How To Transplant Calla Lilies Outside ]]> https://www.gardeningknowhow.com/ornamental/bulbs/calla-lily/transplanting-calla-lilies.htm 9MbS2tqi37sgpUayCKGTvU Tue, 03 Jun 2014 18:30:27 +0000 Wed, 06 Dec 2023 17:43:33 +0000

With their handsome, tropical foliage and dramatic flowers, calla lilies add a hint of mystery and elegance to the garden. This article tells you how to transplant calla lilies outside or into pots for indoor or outdoor culture.

Transplanting Calla Lilies

The best time to transplant calla lilies (Zantedeschia aethiopica) is in the spring after all danger of frost has passed and the soil is beginning to warm. Choose a location with organically rich soil that holds moisture well. Callas grow well in low, moist areas where most other rhizomes would suffer from root rot. The plants tolerate full sun in areas with mild summer, but where summers are hot they need morning sun and afternoon shade.

How to Transplant Calla Lilies Outside

Before transplanting calla lilies, prepare the soil by loosening it with a shovel. Work in some compost to enrich the soil and help it hold moisture. Plant the rhizomes 3 to 4 inches (7.5-10 cm.) deep and transplant potted calla lilies into a hole dug to fit the depth of the pot. Space the plants 12 to 18 inches (30.5-46 cm.) apart. Callas need lots of moisture, so water deeply after planting, and spread at least 2 inches (5.0 cm.) of mulch around the plants to prevent moisture from evaporating. When moving calla lily plants, prepare the new bed and dig holes for the plants before lifting them from the old location so you can get them in the ground as quickly as possible. Slide a spade under the plants at a depth of 4 to 5 inches (10-13 cm.) to avoid damaging the rhizomes. Place them in the holes so that the soil line is even with the surrounding soil. Calla lilies are ideal for landscaping garden ponds, where they thrive in water up to 12 inches (30.5 cm.) deep. Place the plant or rhizome in a basket and plant it so that the rhizome is about 4 inches (10 cm.) deep. Calla lilies are hardy in USDA plant hardiness zones 8 through 10. In cooler zones, the rhizomes must be treated as annuals or dug up in the fall and stored over the winter in a frost-free area. When planted in water, the rhizomes can remain outdoors as long as the water doesn't freeze at the planting depth. You can also transplant your callas into pots and grow them as houseplants. Choose a roomy pot that is at least 6 to 8 inches (15-20 cm.) deep and leave 1/2 to 1 inch (1-2.5 cm.) of space between the top of the soil and the top of the pot to make it easy to water the plant generously. Use a potting soil rich in peat or organic matter that holds moisture. Transplanting potted calla lilies back to the garden in spring is a snap.

]]> <![CDATA[ Dividing Calla Lilies - How And When To Divide Callas ]]> https://www.gardeningknowhow.com/ornamental/bulbs/calla-lily/dividing-calla-lilies.htm f9i8Fo8doaqc7xFgRrMZ3K Mon, 02 Jun 2014 18:22:03 +0000 Wed, 06 Dec 2023 17:43:27 +0000

Calla lilies are handsome enough to grow for their foliage alone, but when the bold, single-petaled flowers unfurl they are sure to attract attention. Learn how to divide these dramatic tropical plants in this article.

Should You Divide Calla Lilies?

How often should you divide calla lilies? Calla lily division is only necessary when the clumps start to decline, but if you want more rhizomes to fill in the garden, it's safe to divide them every three to five years. If you divide them too often, however, they will never quite reach their full potential.

When to Divide Callas

Calla growers have two opportunities to divide the rhizomes:

  • In late winter or early spring after all danger of frost has passed.
  • In late summer or fall when the plants have finished blooming for the year.

Most growers prefer to divide calla lilies in spring, especially in warm climates where you can leave the rhizome in the ground year round. In cooler areas, you might prefer to divide the rhizomes in late summer or fall when you dig them up for winter storage.

How to Divide a Calla Lily

Dividing calla lilies is not difficult. Lift calla rhizomes in fall after the foliage turns brown and pulls away from the roots easily. Slide a shovel under the roots and pry upward to lift the clump. Remove any remaining foliage and brush off the soil. Cut or break apart the rhizome, making sure each section has at least one eye. Let the rhizomes dry for a day to form a callus over the cut before replanting. If you live in an area cooler than USDA plant hardiness zones 8 through 10, you'll have to store the rhizomes and replant them in the spring. Allow them to dry in a well-ventilated area for two to three days. Brush off any remaining dirt with your hands or a dry paper towel, and then dust the bulbs with bulb dust to prevent rot. Store them in a paper bag of peat moss or vermiculite in a cool, dry location. In late winter or spring, chop apart sections of the plant by driving a spade between them at the first sign of new growth. Lift the sections you want to move and replant them right away. Add soil around the plants you leave in place and firm it up with your hands. New gardeners might find this method for dividing calla lilies easier since you don't have to identify the eyes.

]]> <![CDATA[ Calla Lily Problems: Reasons Why My Calla Lily Is Drooping ]]> https://www.gardeningknowhow.com/ornamental/bulbs/calla-lily/drooping-calla-lilies.htm cGxk7fvLSYf4YR6fv4mW6b Sat, 19 Oct 2013 18:24:41 +0000 Sun, 07 Apr 2024 14:02:33 +0000

Calla lilies are native to South Africa and grow well in temperate to warm climates or as indoor plants. They are not particularly temperamental plants and adapt well to full sun or partial shade. Calla lily problems arise when the plant is over or underwatered. This can cause the heavy calla lily flower to droop. Drooping calla lilies may also be from excess nitrogen or a fungal rot disease.

Help! My Calla Lily is Drooping!

These plants are as lovely for their sword-shaped leaves as well as the cupped blooms. The leaves may become limp and drag if you have given the plant too much nitrogen fertilizer, which encourages leafy growth. They will also droop if the soil condition is too dry or too wet. 

The problem can also simply be that the blooms are too large. Stems may grow 2 to 3 feet (61-91 cm.) tall but they are slender and must support robust blooms up to 5 inches (13 cm.) long. Count yourself lucky if you are producing such huge flowers and cut them off and bring them indoors in a vase to enjoy. Leave the foliage until fall to gather energy for the bulb to store for the next year's blooms.

How to Fix a Drooping Calla Lily Due to Water

There is no real method for fixing a drooping calla unless it is simply wilting. In that case, just give it a drink and it should perk up in a day or two. Callas grow from bulbs, which need to be planted in well drained soil and, if potted, in an unglazed pot that will allow excess moisture to evaporate. Drooping calla lilies occur if the bulb is steeped in water and the bulb begins to rot. Once rot has occurred, you will need to discard the bulb and start over.

Fungal Calla Lily Flower Droop

Cool, wet conditions contribute to the formation of fungal spores. When the warm weather hits, they bloom and spread causing all kinds of mayhem on a wide variety of plants. Soft rot is most common on calla lilies. This forms from spores in the soil that attack the bulb and stems of the plant. Once the stems get affected, they become mushy and pliable. This leads to the gardener who says, “Help, my calla lily is drooping!” Calla lily flower droop can stem from several fungal diseases such as Anthracnose and root rot. The best cure is to replace the soil if possible or simply start over with a resistant form of the plant.

Additional Calla Lily Problems

These bulbs will not tolerate freezing weather and even a quick frost can affect the leaves and blooms. In fall, cut back the spent foliage and move the bulb indoors for winter. Let it dry on the counter for a few days and then wrap it in sphagnum moss or newspaper in a mesh bag. Store where temperatures are not freezing and the area is dry. 

Replant the bulbs in spring as soon as soil temperatures have warmed to at least 60 degrees F. (16 C.). You can also start them in pots inside and transplant them for quicker blooms. Drooping calla lilies are usually just caused by easily controlled cultural conditions, so check your work and manage the bulbs for bountiful, beautiful blooms.

]]> <![CDATA[ Do You Deadhead Calla Lily Plants: Removing Spent Blossoms On Calla Lilies ]]> https://www.gardeningknowhow.com/ornamental/bulbs/calla-lily/deadheading-calla-lily-plants.htm 5k19PAVvuFzw87By8SPCtn Fri, 16 Aug 2013 18:41:56 +0000 Wed, 06 Dec 2023 17:48:22 +0000

Calla lilies don't drop petals like many other plants when their flowers are done blooming. Once the calla flower begins to die, it rolls up into a tube, often turning green on the outside. These spent blossoms on calla lily plants are done, have no purpose and should be clipped off. Learn how to deadhead calla lily and the benefits of removing spent blossoms instead of leaving them on the stems.

Deadheading Calla Lilies

Unlike many other flowers, calla lily deadheading won't cause the plant to create more blossoms. Each calla is designed to create a certain number of flowers, sometimes one or two and other times as many as six. Once those blooms have died off, the plant will only show foliage until the following spring. So if it won't create more flowers, why do you deadhead calla lily plants? The reasons are twofold:

  • First, it simply looks better to have a neat and tidy green plant than one with dead and drooping flowers hanging down. You plant flowers for their looks, so it makes sense to keep them looking as attractive as possible.
  • Second, calla lily deadheading is important for growing large, healthy rhizomes to plant for next year's flowers. Spent flowers tend to turn into seed pods, which use up resources better left for other tasks. Having a bloom on the plant takes a lot of energy, and the plant can use this energy better by concentrating on making a large, hardy rhizome. Once you remove the dead flower, the plant can focus on getting ready for next year.

How to Deadhead Calla Lily

The information on deadheading calla lilies is a simple set of instructions. Your aim is to remove the blossom, as well as to make the plant more attractive. Use a set of garden shears or a pair of scissors to clip the stem off near the base. Make sure none of the bare stem is sticking up through the leaves, but leave a stub of stem near the base of the plant. Coincidentally, if you want to clip calla lilies for use in bouquets, this is the best way to remove the flowers while leaving a healthy plant.

]]> <![CDATA[ Help For Yellowing Calla Lilies: Why Calla Lily Leaves Turn Yellow ]]> https://www.gardeningknowhow.com/ornamental/bulbs/calla-lily/yellow-calla-lily-leaves.htm YAmC1H1oKy29KR5Hv9yws Thu, 15 Aug 2013 18:37:06 +0000 Wed, 06 Dec 2023 17:48:31 +0000

The leaves of a healthy calla lily are a deep, rich green. If your houseplant or garden list includes calla lily, yellowing leaves can be a sign that something is wrong with your plant. A calla lily turning yellow can be an indication of a number of problems, but most of them are easily fixed. Learn why calla lily leaves turn yellow, and more importantly, what to do about it to save your callas.

Reasons for Yellow Leaves on Calla Lilies

If your biggest plant problem is, “My calla lily leaves are yellowing,” you should look beneath the soil for the answers. Yellow leaves are a sign of problems in the roots of the plant, for a number of different reasons. Yellowing leaves, known as chlorosis, is sometimes caused by a nutrient shortage in the soil, most often nitrogen, iron, zinc or some other trace element. Either your soil is actually lacking this trace element, or there is something in the roots that is preventing the nutrients from being absorbed. Check with your local extension service about testing your soil. Another common reason for yellowing calla lilies is root rot. Calla lily plants don't like to have their roots constantly soaked in puddles of water. Too much moisture causes the roots to begin rotting, along with contracting other diseases, and will wither the plant's leaves.

How to Treat Yellow Leaves on Calla Lilies

Treating yellow leaves on calla lily plants involves dealing with the actual planting environment. If possible, dig up the plants and transfer them to a spot with well-drained soil, preferably a raised bed. Plant the rhizomes carefully to avoid injury, and never over water the plants once they have been established.

]]> <![CDATA[ Calla Lily Seed Info: How To Grow A Calla Lily From Seed ]]> https://www.gardeningknowhow.com/ornamental/bulbs/calla-lily/calla-lily-seed-info.htm 3Wg3r7AVaKP59ZdCyVmnhE Sat, 09 Feb 2013 17:26:02 +0000 Sun, 18 Jan 2026 22:11:02 +0000

Calla lilies, imported to American from South Africa, are an exotic addition to any garden and are easy to grow in USDA plant hardiness zones 7 through 10. These old world flowers also make excellent houseplants and bring interest and color to any room. In addition to division, one may ask, “Can I grow calla seed pods and, if so, where can I find info on how to grow a calla lily from seed?” Keep reading to find out.

Calla Lily Seed Info

Calla lilies are elegant flowers that have been around a very long time. These beautiful flowers grow from a rhizome and produce huge green leaves that are usually covered with lighter spots. Colorful flowers ranging from pale pink to deep purple and yellow appear atop trumpet-shaped stems.

Eventually, the blooms wither, leaving a pod-like capsule filled with calla lily flower seeds. One question that many gardeners have is, “Can I grow calla seed pods?” Although calla lilies are usually propagated by separating the bulbs, they can also be grown from seeds. Seeds can be purchased from catalogs, garden centers or resellers such as Amazon. Alternatively, the seeds can be acquired from mature seedpods on your existing plants.

It is necessary to wait until the seedpods are thoroughly dry before removing them from the parent plant.

How to Grow a Calla Lily from Seed

Seed growing calla lilies requires a little work and some patience. It can take up to three years for a calla lily planted from seed to bloom. Calla lily seeds must be pre-grown in order to be successful. Spread seeds out on a damp paper towel and cover them. Place the paper towel in a cool location, such as a basement or cellar. Check the seeds in a few days for growth.

Discard any that do not show any signs of life. Put a high-quality soilless medium in a well-draining pot and place the seeds that have started in the pots. It is best to plant two seeds per pot right underneath the soil. Keep the soil moist with a small, indoor watering can, like this one on Amazon, watch for growth.

After a week, you can remove any of the seeds that have not grown. Watch the plants for another couple of weeks and remove the weakest shoot from each pot. This will give energy to the stronger sprout. Once the calla lily has grown a while, it can be transplanted into a larger pot or transplanted outside.

Before transplanting, wash the plant roots to remove bacteria. Water the newly transplanted calla lily regularly until it becomes established.

]]> <![CDATA[ Green Calla Lily Flowers - Reasons For Calla Lilies With Green Blooms ]]> https://www.gardeningknowhow.com/ornamental/bulbs/calla-lily/green-calla-lily-blooms.htm r1ZNxP9t3g7RBnYnLe7Nyv Sun, 02 Sep 2012 13:23:06 +0000 Wed, 06 Dec 2023 18:04:29 +0000

The elegant calla lily is one of the most recognized flowers in cultivation. There are many colors of calla lily, but the white is one of the most used and part of wedding celebrations and funerals alike. The long lasting flowers are a florist's dream and potted miniature plants decorate homes across the world. There are few calla flower problems, but a common occurrence is the appearance of green flowers. This may be due to cultivation problems, lighting, or the age of the blooms.

Calla Lilies with Green Blooms

Unless you are growing the ‘Green Goddess' variety of calla, you might be surprised by green calla lily flowers. Calla lilies are not true lilies. They are in the same family as the Jack-in-the-pulpit. The flowers are not what they seem either. The flower's petals are called the spathe. The spathes are modified leaf structures, which fold around the spadix. The spadix bears the tiny true flowers. Green spathes are often the result of low light situations. Calla flower problems can also arise from excess nitrogen. Flowering plants need balanced fertilizers or ones that are slightly higher in phosphorus. High levels of nitrogen can retard the formation of blooms and cause green calla lily flowers.

Green Calla Lily Flowers in Young Plants

It is completely normal to have green spathes on some varieties of young calla plants. The buds start out green or streaked with green and turn color as they open and mature. This natural occurrence is not considered among the calla flower problems, as it will fix itself in time. Plant callas in bright sunlight where soils are well drained. Plants in dim light may have difficulty coloring and stay greenish. Provide supplemental irrigation during flowering periods to promote healthy plants. Callas are originally from Africa and require hot temperatures to promote flowering. They bloom the most in temperatures from 75 to 80 degrees F. (24-27 C.). In proper conditions, calla lilies will bloom all summer long, with flowers lasting for up to a month on the plant.

Why are Calla Flowers Turning Green?

The reversion of already colored calla flowers leads the gardener to wonder, “Why are calla flowers turning green?” The plant is perennial in many zones and enters a dormancy period when fall approaches. This causes the long-lived blooms to change color, often to green and then brown. Calla lilies with green blooms are a normal part of the mature plant's life cycle. The plant begins to focus energy on its leaves, which are gathering energy to fuel the next season's bloom. When the flowers are limp and green, cut them off so the plant can use all its resources on fueling the rhizomes. Dig up the rhizomes in cold zones and store them in a vented bag nestled in peat or sphagnum moss. Replant the rhizomes in early spring when soils are workable.

]]> <![CDATA[ How To Make Calla Lily Flower Bloom and Last Longer ]]> https://www.gardeningknowhow.com/ornamental/bulbs/calla-lily/make-calla-lily-bloom.htm 7c8sngETCTqvUjyHfjV5f5 Tue, 26 Jan 2010 03:37:45 +0000 Thu, 09 May 2024 21:41:39 +0000

How To Make Calla Lily Flower Bloom and Last Longer

Calla lilies are known for their graceful elegance. They are ideal in formal spaces, garden beds and containers and are always dazzling to even the most discerning of gardeners. They’re easy to grow, which further contributes to their popularity.

Many gardeners choose to plant the flower annually, which ensures a dependable bloom period, usually occurring sometime in early summer. In zones where they are hardy, callas will behave as perennials, but conditions must be ideal for the plant to continue to flower well.

This guide will explore some of the most commonly asked questions regarding the calla’s flowering needs, including questions like why calla lilies are not blooming, when a calla lily blooms, how to make calla lilies last longer, and how to make a calla lily flower again.

Why Won’t My Calla Lilies Bloom?

Even the most experienced gardeners can struggle with how to make a calla lily bloom. Others may wonder whether calla lilies bloom more than once. This topic is best explored when we understand the plant’s growth cycle.

Provided their needs have been met, you can generally expect a flush of calla lily flowers that lasts throughout the summer season. In most gardens, this means their blooms are produced and held over a period of approximately 6-12 weeks. Failure to flower can occur for various reasons, with some of the most common ones listed below.

  • 1. Excess Nitrogen Like most flowers, the production of buds in calla lilies can be negatively impacted by excess levels of nitrogen in the soil. Too much nitrogen leads to an overproduction of foliage. This results in large, leafy plants that are unable to bloom well. Testing your soil and amending it before planting will help with this problem.
  • 2. Lack of Sun Light is essential to the formation of flowers. Most species of calla lily will grow best under full- to part-sun conditions, receiving approximately 5-8 hours of direct sun each day. Though the plant can tolerate full sun in mild climates, shade throughout the hottest parts of the afternoon is especially beneficial to plants grown in regions that experience hot summer weather.
  • 3. Lack of WaterCalla lilies thrive where soil moisture levels remain consistent. This makes them a good choice for growing near ponds, along ditches, or in other low-lying areas. Routine irrigation throughout the season plays a vital role in flower production, more specifically, in regions that are dry or prone to drought. While watering is a key component of calla lily care, gardeners should make certain soils do not become waterlogged or remain saturated for prolonged periods.
  • 4. Pests & Diseases Pests and disease may also lead to the loss of flowers. Though most feeding insects will primarily cause only aesthetic damage to blooms, some may have an impact on their formation. Disfigured or deformed buds are often among the primary symptoms of severe infestations. The same can also be said with disease, with more severe problems leading to the complete loss of plants.

Helping Calla Lilies to Keep Blooming

Calla lilies are prized for their long bloom period. Though the plant is not considered to be a cut-and-come-again species, growers can keep their beds looking tidy through consistent deadheading. Removing faded flowers will also help to maintain vigor and allow plants to divert their energy into continued growth, rather than the production of seeds.

Helping Container-Based Calla Lilies to Bloom

If you’re growing callas in containers, you can help rhizomes to rebloom in a variety of ways. This includes selecting pots that are most accommodating to the plant, as well as consistently monitoring soil moisture and nutrient levels throughout the season. Certain species may also require a period of dormancy to bloom successfully.

Frequently Asked Questions

Does a Calla Lily Bloom All Summer?

Most calla lilies begin to bloom in early summer. Flowers are well-held, atop sturdy stems. This contributes to their high ornamental value, often lasting months before flowers finally begin to fade and take on a diminished appearance.

Does a Calla Lily Bloom Every Year?

Where they are hardy, calla lilies should rebloom when they’re provided with adequate light, water, and nutrients. Although failure to rebloom is most commonly the result of one or more of the cultural components listed here, insect pressure or disease may also play a role.

]]> <![CDATA[ Calla Lily Care In Winter - Caring For Calla Lilies Over Winter ]]> https://www.gardeningknowhow.com/ornamental/bulbs/calla-lily/calla-lily-winter-care.htm 2WqmWqgZ47uvj4t4iP61zV Sun, 25 Oct 2009 02:11:02 +0000 Mon, 15 Dec 2025 12:16:40 +0000

Calla lilies have long been loved for their elegance and simple beauty. These beautiful flowers are an asset to any garden, but if you would like to see calla lilies year after year in your garden, you need to take a few extra steps for calla lily winter care. Winter care for calla lily plants is not difficult. Keep reading to learn if and when to dig up calla lilies and how to care for calla lilies over winter.

Calla Lily Winter Care in Warm Climates

Calla lilies are not cold hardy. This means that calla lily winter care in some gardens will be different from other gardens. If you live in USDA plant hardiness zone 8 or higher, your calla lilies can survive the winter outdoors in the ground and do not need to be dug up. Winter care for calla lily plants in the ground in warm climates is simply to mulch the spot where the calla lilies grow in the winter and stop watering the spot for the winter. This will allow the plant to go dormant and rejuvenate itself.

If you find that you are in a much warmer climate and your calla lilies are not performing well, you may want to follow the directions below for digging up and storing calla lily rhizome for winter. It may be that your calla lilies are not getting enough dormancy and storing them will provide that for them.

Winter Care for Calla Lily Plants in Colder Climates

If you live in zones 7 or lower, calla lilies will not survive the winter cold, so your winter care for calla lily plants will be different than for warm climates. Your calla lily care in winter will consist of digging the rhizome of the plants. You'll need a spade (like this one on Amazon) to do this.

Note that in some areas, like zone 7, callas may be left in ground with added protection over winter and still come back. That said, you may want to play it safe and dig them up. The best time when to dig calla lilies is right after the frost has killed the foliage. This will ensure that your calla lilies have stored all the nutrients they can to survive the winter. The next step in winter care for calla lily plants is after you dig them up, gently brush off any remaining dirt. Do not wash the calla lily rhizomes off as this can cause the rhizomes to rot later on. Cut off the foliage from the top of the rhizomes, leaving about 2 to 3 inches (5 to 7.5 cm.) of the dead leaves. After this, leave the rhizomes to dry in a warm, dry place to dry for four to seven days. This is important to calla lily care in winter because it allows the outer skin of the rhizome to toughen up and will help it survive the winter. This is called curing. After the calla lily rhizomes have dried, place them in a paper bag or wrap them in newspaper. Store them in a cool, dry place, somewhere that stays around 50 F. (10 C.). Proper calla lily winter care is essential to having these lovely flowers in your garden year after year.

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