Sempervivum caucasicum

A Caucasian houseleek of high mountain rocks and stony slopes in Russia, Georgia and Armenia. It is fully frost-hardy and needs a cold winter outdoors, full sun and very sharp drainage; it does poorly as a warm indoor plant.

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 outcrops, scree and stony subalpine to alpine meadows in the Greater and Lesser Caucasus.

Recorded at 1450-2900 m, median 2100 m.

North CaucasusTranscaucasus

🔒 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 CC0 licence, unmodified.