Euphorbia avasmontana

A spiny, branching columnar succulent Euphorbia of rocky hills in central and southern Namibia and the Northern Cape. It wants blazing sun, heat in summer, and a dry, cool winter.

At home, aim for

Day IntermediateTargets in Plantistry

Night A clear drop at nightTargets in Plantistry

Humidity Dry airBand in Plantistry

Light Full sunDLI and PPFD in Plantistry

Expects a seasonal restGrows in the ground

Where it grows wild

Rocky hillsides and stony plains in arid savanna and Nama Karoo; the name refers to the Auas Mountains near Windhoek. Details here are built from the measured climate and what is typical of Namibian columnar Euphorbia.

Measured sites lie at roughly 775–1450 m; few records carry an elevation.

NamibiaNorthern Cape

🔒 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

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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.