Euphorbia caerulescens

A blue-grey, spiny, clump-forming succulent spurge from the Eastern Cape, where it forms large rhizomatous colonies in Karoo scrub and valley thicket. It is hardy and easy: full sun, hot summers, a cooler drier winter and sharp drainage.

At home, aim for

Day Cool-growingTargets 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

Grows in dense clumps on stony slopes and flats in arid scrub and succulent thicket, spreading underground into wide colonies.

Measured sites lie at 90 to 620 m.

Eastern CapeSouth Africa

🔒 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 3.0 licence, unmodified.