Zantedeschia aethiopica
The white arum lily is a clump-forming, rhizomatous aroid of marshes, seeps and stream banks in South Africa and neighbouring countries. It grows in cool, wet weather and slows or dies back when its marsh dries out. Grow it in rich, constantly moist soil in sun or light shade, with a cool rather than hot growing season.
Where it grows wild
Forms large clumps in seasonally wet places: vleis, marshes, seepage slopes, ditches and the banks of streams and ponds, often with its rhizomes in shallow water. Plants are evergreen where water lasts all year and deciduous where the site dries out seasonally.
Records run from 3 to 1,618 m (median 150 m), but only six carry an elevation. It grows from coastal lowlands into the Drakensberg foothills.
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The wild conditions above, turned into targets for a shelf, a tent or a greenhouse. The full profile has:
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Profiles are drafts built from measured range and climate and from published sources; each section carries its own confidence in the app. Photo from Wikimedia Commons, used under its CC BY-SA 2.5 licence, unmodified.