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Plant guide

Calla Lily.

Zantedeschia aethiopica

Pronounced zan-te-DES-kee-uh ee-thee-OH-pih-kuh

Also known as Altar-Lily, Arum Lily, Arun Lily, Calla lily, Common Arum, Common Arum Lily, Egyption Lily, Florist's Calla

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calla lily
Photo by zebedeugalinha (CC BY) via iNaturalist

The Calla Lily is a stunning plant known for its elegant, trumpet shaped spathes. It thrives in moist environments and adds a touch of sophistication to any space. These plants are actually rhizomatous perennials that appreciate consistent moisture.

Another photo of Calla Lily
Photo by Siphiwe Bright Zengele (CC BY) via iNaturalist

At a glance

Care level
Moderate
Plant type
Perennial
Light
Bright indirect light
Indoor light
Bright indirect
Water
Every 3 to 7 days
Mature size
90 to 120 cm
Growth rate
Medium
Hardiness
USDA 7 to 10
Bloom time
Late spring to early summer

Care

Keep the soil consistently moist but never waterlogged to prevent rot. Watch for yellowing leaves which often signal overwatering or poor drainage. Ensure the plant receives plenty of bright light to encourage those beautiful blooms.

Watering
Keep the soil evenly moist at all times without letting it dry out completely.
Feeding
Apply a balanced liquid fertilizer during the active growing season.
Pruning
Remove spent flowers and yellowing foliage to keep the plant tidy.
Repotting
Repot in the spring if the rhizomes become too crowded in the container.
Soil
Rich, well draining potting mix
Soil pH
6.0 to 6.5
Temperature
-5 to 35°C
Humidity
60 to 90%
Drought tolerance
Low
Lifespan
Perennial, typically 5 to 10 years.
Fragrance
Light
Deer and rabbits
Moderate

Signs it needs repotting

  • Roots growing out of the drainage holes.
  • The plant has become crowded and stopped blooming well.
  • Water runs straight through the pot without soaking in.

Safety

People
The plant is toxic to humans and pets if eaten, causing swelling of the mouth and throat.
Pets
This plant is toxic to cats and dogs if ingested as it contains calcium oxalate crystals.
Children
Keep this plant away from children as the leaves and stems contain irritating sap that can cause pain if handled or chewed.
Contact allergens
The sap can cause skin irritation or dermatitis in sensitive individuals.
Airborne allergens
The pollen is generally not considered a major airborne allergen.
Edibility
All parts of this plant contain calcium oxalate crystals which cause severe irritation if ingested.

How to identify it

  • Large arrow shaped deep green leaves
  • Showy white funnel shaped spathes
  • Bright yellow central spadix
  • Sturdy succulent like stems
Height
0.6 to 1.2m
Spread
0.3 to 0.6m
Leaves
green, deciduous
Flowers
white, 10 to 25cm
Fruit
green, yellow, Late summer

Problems to watch for

    Check your calla lily from a photo

    Pocket Botanist looks at a photo of your plant and tells you what's wrong and what to try first.

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    Growing it

    Propagation
    division, seed
    When to plant
    spring
    Overwintering
    In colder regions, dig up the rhizomes after the first frost, clean them, and store them in a cool, dry place until spring.
    In containers
    It grows very well in containers, provided you use a large pot that retains moisture well.

    Rhizome Division

    1. Carefully dig up the plant during its dormant period.
    2. Gently separate the rhizome clumps with a clean, sharp knife.
    3. Ensure each section has at least one healthy growth point.
    4. Replant the divisions in moist, rich soil.

    Group these with other moisture loving plants to create a cohesive bog garden aesthetic.

    Grows well with

    • Hostas — They share similar shade and moisture requirements.
    • Ferns — They provide a lush, textural contrast in damp garden beds.

    Similar species

    • Golden Calla — It has similar growth habits but features yellow spathes.

    Science

    Family
    Araceae
    Genus
    Zantedeschia
    Order
    Alismatales
    Class
    Liliopsida
    Native range
    Southern Africa
    Conservation
    This species is common and not of conservation concern.

    It grows naturally in marshy areas and along stream banks where it has constant access to moisture.

    Value to wildlife
    nectar source
    Pollinators
    bees, butterflies
    Uses
    cut flowers, pond margins, container gardens

    Through the year

    JFMAMJJASOND
    Flowering
    Fruiting
    Foliage

    Ecological indicators

    Salinity
    2/9
    Moisture
    8/9
    Nutrients
    6/9
    Soil reaction
    5/9
    Light
    6/9
    Temperature
    7/9

    Taxonomy resolved against GBIF.

    Questions people ask

    Does it need full sun?
    It prefers bright, indirect light or partial shade in hotter climates.
    Can I grow it in a pot?
    Yes, it makes a lovely container plant if kept consistently moist.

    Where the name comes from

    The genus honors Italian botanist Giovanni Zantedeschi, while the species name refers to its origin in Ethiopia, though it is actually native to southern Africa.

    Good to know

    • It is the national flower of Saint Helena.
    • Despite the common name, it is not a true lily.
    • It thrives in very wet soil and can even grow in shallow water.

    Also in

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    This page is a general guide. Save your plant in Pocket Botanist and you get care reminders timed for this plant, plus a care history that shows what worked.

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    This guide was generated with AI and checked against GBIF taxonomy. It is general information, not horticultural or veterinary advice. Read about how we build these guides.