Euphorbia knuthii

A dwarf spiny Euphorbia from the hot sandy lowlands of Maputaland in north-eastern South Africa and southern Mozambique, forming low clumps of angled stems from a thickened rootstock. It likes heat, bright light and a dry winter rest, and is straightforward in a sunny greenhouse.

At home, aim for

Day IntermediateTargets in Plantistry

Night Close to the dayTargets in Plantistry

Humidity Dry airBand in Plantistry

Light Bright, filtered lightDLI and PPFD in Plantistry

Expects a seasonal restGrows in the ground

Where it grows wild

Low succulent among grass and shrubs in coastal bushveld and sand thicket, often sheltered by taller vegetation. Habitat details are generalised from the region and related dwarf Euphorbia.

Mostly near sea level to about 650 m (measured sites 32–421 m).

KwaZulu-NatalMpumalangaMozambiqueEswatini border region

🔒 Growing it like that

The wild conditions above, turned into targets for a shelf, a tent or a greenhouse. The full profile has:

✓ Day and night temperature targets, and the limits it tolerates

✓ Humidity band, and how to hold it

✓ Light as DLI and PPFD for a grow light

✓ Wet and dry seasons, and whether to rest it

✓ Substrate and airflow

✓ A step-by-step setup to grow it like the wild

Grow Euphorbia knuthii? Add it to a free garden and its full profile opens. Pro opens all 38,374 profiles in the library, plants and fungi.

Start free Sign in

More Euphorbia

Euphorbia abyssinica Euphorbia milii Euphorbia polygona Euphorbia candelabrum Euphorbia misera Euphorbia neriifolia Euphorbia tirucalli Euphorbia arbuscula Euphorbia canariensis Euphorbia heterochroma Euphorbia kaokoensis Euphorbia regis-jubae All 517 →

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 3.0 licence, unmodified.