Sempervivum atropatanum

Sempervivum atropatanum is a houseleek from the mountains of northwestern Iran (Iranian Azerbaijan), where winters are freezing and summers hot and dry. Like other houseleeks it is a full-sun rock plant that is happiest outdoors, needing real winter cold and very sharp drainage. Information on this species is scarce, so treat the details as genus-level guidance.

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

Inferred from the genus: rocky mountain slopes, screes and cliff ledges in open steppe, rooted in thin stony soil.

The single wild record lies near 1,950 m in the far northwest of Iran; the true elevation range is not known.

Iran

🔒 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.