Sempervivum comollii

An Italian houseleek name, honouring the botanist Comolli and associated with the Alps of Lombardy; it is often treated as a natural hybrid within the genus. Grow it as a hardy alpine rosette: full sun, very gritty soil and outdoor winter cold.

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

Like other alpine Sempervivum it most likely grows on sunny rocks, screes and thin stony turf in the mountains.

No elevation records; the climate site is a lowland centroid at about 270 m, while alpine Sempervivum habitats usually lie at roughly 1,000–2,500 m.

Italy (Alps)

🔒 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.