Crassula undulata

Doily crassula

Crassula undulata, the doily or fringe crassula, is a bushy succulent about 40 cm tall from the mountains of South Africa's Western Cape. Its fleshy, often red-speckled leaves are edged with a row of pearl-like hairs, which give them a silvery rim. It is a winter-rainfall plant: grow it in bright light and let it dry out, mostly in summer.

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

It grows on rock outcrops, ledges and crevices, in gorges and on south- or south-west-facing slopes in fynbos and succulent Karoo. The shaded slopes are cooler and slightly moister than the open veld.

Most records come from mountain kloofs of the Western Cape, probably at a few hundred to about 1,000 m. GBIF records carry no elevations.

South Africa (Western Cape)South Africa (Northern 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.