Crassula cooperi

Crassula cooperi, named by Regel in 1874, is a small mat-forming Crassula long grown in collections; the mapped wild records are in the Eastern Cape Karoo highlands, with Kew also listing Zimbabwe. The measured sites have warm, wet summers and cold, dry winters with nights near freezing, so grow it bright with summer water and a cool, dry winter.

At home, aim for

Day Cool-growingTargets in Plantistry

Night A clear drop at nightTargets 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

Mat-forming on rocky ground in the Eastern Cape interior; species-specific microhabitat notes were not accessible.

Few records carry an elevation; the climate site is on the Karoo escarpment.

Cape ProvincesZimbabwe

🔒 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 4.0 licence, unmodified.