Calla lily (Zantedeschia aethiopica) is a rhizomatous perennial from southern Africa, grown for its large white spathes and dark green arrow-shaped leaves. It thrives with moist soil and part shade, and it can become invasive in wet areas where it is naturalised.
Family
Araceae (Arum family)
Grows as
Bulb
Light
Part shade
Water
Keep the soil consistently moist, especially in growing season, and water more in dry weather.
Soil
Rich, moist, well-draining soil or heavy garden loam; tolerates wet margins.
Temperature
15–25 °C; tolerates light frost in cultivars like 'Crowborough', but protect from hard freezing.
How easy
Easy
Safety
Toxic: All parts contain calcium oxalate; raw ingestion causes burning of the lips, tongue and throat, swelling, stomach pain and diarrhea.. Toxic to cats and dogs (ASPCA).
Native range
S. Africa
Climate
seasonally dry tropical
About
Zantedeschia aethiopica, commonly known as calla lily, arum lily, and death lily, is a species of flowering plant in the family Araceae, native to southern Africa in Lesotho, South Africa, and Eswatini.
How to grow it
A number of cultivars have been selected as ornamental plants:
'Crowborough' is a more cold tolerant cultivar growing to 90 cm (35 in) tall, suited to cool climates, such as Ireland or Britain and the north-western United States.
Where it grows
Z. aethiopica is native to southern Africa, specifically Lesotho, Mozambique, South Africa, and Eswatini. It has naturalised in Kenya, Madeira, Azores, Malawi, New Zealand, Tanzania, Zambia, coastal California, in western Europe from the Iberian Peninsula to Ireland, the high altitude mountainous areas of Luzon in the Philippines, and Australia, particularly in Western Australia where it has been classified as a toxic weed and pest. The majority of invasive populations are located in coastal prairies and wetlands near human settlements. It is also a highly invasive species in riparian zones and pastureland of Western Australia and New Zealand. The cultivar 'Green Goddess' is listed in the New Zealand National Pest Plant Accord, which proscribes its cultivation, sale, and distribution.
Text excerpted from the Wikipedia article Zantedeschia aethiopica by its contributors, under CC BY-SA 4.0; the excerpts and the care summary drawn from them are shared under the same licence.
The care summary was written by AI (Claude, Anthropic) from the sources on this page, with general growing knowledge where they are silent. Check before relying on it.
Life form, climate and native range: World Checklist of Vascular Plants, Royal Botanic Gardens, Kew (CC BY 3.0), reformatted; see Plants of the World Online.