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Species library › Crassula › Crassula alstonii
Succulents Partly documented

Crassula alstonii

Crassula alstonii is a small, compact, winter-growing Crassula from Namaqualand in South Africa's Northern Cape. It grows on rocky hill slopes in the winter-rainfall succulent Karoo. Grow it very bright and dry, water it in the cool season, and keep it dry and dormant through summer heat.

Crassula alstonii
Photo: Eria Wei, CC BY-SA 4.0, via Wikimedia Commons
At home, aim for
Day Cool-growingTargets in Plantistry
Night Close to the dayTargets in Plantistry
Humidity Dry airBand in Plantistry
Light Full sunDLI and PPFD in Plantistry
Expects a seasonal restGrows on rock (lithophyte)

Where it grows wild

Rocky hill slopes and outcrops in Namaqualand; one specimen is from the upper north-west slopes of hills.

Not recorded; Namaqualand localities (Steinkopf, Kommaggas, near Port Nolloth) run roughly 200–1,000 m.

South 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 4.0 licence, unmodified.