Sempervivum barbulatum

An alpine houseleek from the Austrian Alps, generally treated as a natural hybrid between the cobweb houseleek and the mountain houseleek, with bristly-tipped, slightly cobwebbed rosettes. It is fully hardy and needs cold winters, full sun and 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

Recorded on sunny rocky slopes, screes and rock outcrops in the high Alps of East Tyrol, where both parent species grow together. Rosettes sit in thin gritty soil and crevices.

Few records carry an elevation; the climate sites are at about 1,800-2,100 m.

Austria

🔒 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.