The Easter festival is closely linked to calla lilies, which have traditionally been symbolic of rebirth and resurrection. Present-day hybrids exhibit a diverse range of hues, in addition to the classic species’ pure white blossoms. The blooms, which are often referred to as spathes, provide containers, borders, mass plantings and cut flower bouquets with vibrant colour for week after week. This tropical plant, grown from rhizomes, is also offered for sale as a houseplant at florist stores. Calla lilies are exotic, sensual and graceful, and although they are not actually lilies, they do have many of the same characteristics. Many gardeners are astonished by how simple it may be to produce and maintain calla lilies.
Calla lily: Key facts
| Kingdom | Plantae |
| Clade | Tracheophytes |
| Order | Alismatales |
| Family | Araceae |
| Subfamily | Aroideae |
| Tribe | Zantedeschia |
| Genus | Zantedeschia |
| Bloom time | 8 weeks |
| Height | 12-36 inch tall |
| Spread | 9-24 inch wide |
| Zone | 8-10 |
| Exposure | Full sun to partial shade |
Calla lily: How to plant?
Thick rhizomes or fleshy roots, which are sold when dormant in winter or spring, are the source of calla lilies. Get dormant rhizomes in the winter or spring, then plant 8–10 cm deep in high-quality, peat-free multipurpose potting compost to encourage growth. For early blooms, either pot up and begin development indoors, or plant outdoors following the frosts. It is necessary to progressively harden off or acclimate indoor-raised plants to the outdoors by leaving them outside for longer lengths of time. If calla lilies are to be grown in the ground, enrich the soil with a generous amount of well-rotted compost or a specialised soil conditioner. Set plants apart by 30 to 45 cm.
Calla lily: Planting tips
- Calla lilies should be cultivated in soil that drains properly, much like most other plants.
- Choose a high-quality growing mix over garden soil when planting them in containers.
- Watering should be done sparingly when the rhizomes are first planted. Watering more copiously can be started once the plants develop a few leaves.
Calla lily: When to plant?
After there is no longer any chance of frost, calla lilies should be planted in the spring. It is preferable to wait in colder climates until the soil has warmed to at least 65°F. Before planting the rhizomes in the garden, you can give them a head-start by growing them in pots indoors for around one month.
Calla lily: Where to plant?
Due to their tenderness, hybrid calla lilies require conditions free of frost. Grow in a heated greenhouse, conservatory or on a windowsill with good lighting. You can grow calla lilies in the garden, in pots or as a border planting once the chance of frost has passed. It is best to find a well-lit area away from the brightest midday sun. Plants can withstand some shade, but not complete shadow. Wind protection is necessary for calla lilies.
Calla lily: Care tips
Calla lily: Humidity and temperature requirements
The ideal range for this tropical plant is between 60 and 80 degrees Fahrenheit. The afternoon sun should be avoided as calla lilies prefer damp, humid environments. Lower temperatures than fifty degrees Fahrenheit cause plants to go dormant.
Calla lily: Soil requirements
Well-drained, permeable soil is preferred by hybrids. Although clay soils can be difficult, sandy soils can benefit from fertiliser application. Pick a premium all-purpose potting mix for your containers.
Calla lily: Watering requirements
When the ground is just almost dry, give them a little water, but not too much—hybrid callas don’t like their soil to be too wet.
Calla lily: Fertiliser requirements
Use a slow-release fertiliser when you plant. An abundance of leaves and lengthy stems will result from too much nitrogen, which will inhibit the growth of buds. More food is not required on fertile soil.
Calla lily: Deadheading
To make plants look nicer, trim damaged blooms and remove any broken or discoloured foliage.
Calla lily: Pests and diseases
Bacterial soft rot, botrytis, powdery mildew, grey mould, blight, leaf spots, dasheen mosaic virus, spotted wilt and armillaria rot are a few possible diseases. Aphids, thrips, spider mites, Japanese beetles and slugs are examples of pests that affect calla lilies.
Calla lily: Harvesting
For bouquets and weddings, calla lilies are in high demand since they make exquisite cut flowers. As with other flowers, don’t trim the stems when harvesting calla blooms. In order to extract the stalk and blossom from the plant, grab the base of the stem and gently tug. When picked properly, calla blossoms can last up to two weeks.
Calla lily: Toxicity
Calla lilies are toxic when ingested. This plant, like other members of the Araceae family, has crystals of insoluble calcium oxalate. These crystals can pierce tissue and irritate the mouth and gastrointestinal tract when chewed or bit into by this plant. Breathing becomes challenging when an extremely rare case of upper airway edema takes place.
FAQs
When is the best time to plant Calla Lilies?
Plant Calla Lilies in the spring after the last frost for optimal growth.
What sunlight conditions do Calla Lilies prefer?
Calla Lilies thrive in partial to full sunlight, though they appreciate some shade in hotter climates.
How often should one water Calla Lilies?
Keep the soil consistently moist, but not waterlogged. Water when the top inch of soil feels dry.
Do Calla Lilies require special soil?
They prefer well-draining soil rich in organic matter, such as a mix of potting soil and perlite.
Can Calla Lilies be grown in containers?
Yes, they do well in containers with good drainage, making them suitable for both garden beds and pots.
How tall do Calla Lilies typically grow?
They can reach a height of 1 to 3 foot, depending on the variety.
When do Calla Lilies bloom?
Calla Lilies typically bloom from late spring to early summer.
How do one care for Calla Lilies after flowering?
Allow the foliage to die back naturally; reduce watering and let the plant rest before the next growing season.
Are Calla Lilies toxic to pets?
Yes, all parts of the Calla Lily plant contain oxalates and can be toxic to pets if ingested.
Can Calla Lilies be grown as cut flowers?
Yes, Calla Lilies make stunning cut flowers and can last a long time in floral arrangements. Cut them when the first few blooms open for the longest vase life.
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