Sempervivum borissovae

A houseleek from the mountains of the Caucasus, recorded at about 1650–1820 m. It is fully hardy and needs full sun, sharp drainage and a real cold winter, just like other alpine Sempervivum.

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 outcrops in the subalpine zone of the Caucasus, judging from the record sites and the genus.

The two records lie at about 1650 and 1820 m; the genus here commonly reaches 2500 m or more.

North CaucasusTranscaucasus

🔒 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 Public domain licence, unmodified.