Sempervivum wulfenii

A high-alpine houseleek of the Central and Eastern Alps, known by its bluish-green rosettes and yellow flowers, that grows mainly at 1,800–2,800 m on acidic, siliceous rock. It is fully hardy and wants full sun, cold winters and sharp drainage; it suffers in hot, humid lowland summers.

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

Alpine grassland, rocky slopes, screes and rock crevices above the treeline, usually on silicate (lime-free) rock, under winter snow cover.

Recorded at 450–2,784 m, median 2,145 m; low records are probably outliers or garden plants.

AustriaItalyNW. Balkan Pen.Switzerland

🔒 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.