Sempervivum ciliosum

A hardy houseleek from the mountains of the southern Balkans, with tight grey-green rosettes fringed with fine hairs that often close up into balls in summer drought. It is a plant for sunny, open outdoor rock gardens or troughs, and it fails in warm, humid or shaded indoor conditions.

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 slopes, screes and rock crevices in open montane habitats, often on siliceous rock, in full exposure.

Few records carry an elevation; the climate sites span about 480–1,520 m, and the genus typically ranges into the subalpine zone.

AlbaniaBulgariaGreeceNW. Balkan Pen.

🔒 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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More Sempervivum

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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.