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Cobweb House Leek

Sempervivum arachnoideum

Also called Cobweb Houseleek

Cobweb House Leek
Photo: Schnobby, CC BY-SA 3.0

Cobweb house-leek is a small, mat-forming rosette succulent from European mountains, with cobweb-like hairs on its rosettes. It spreads by offsets and needs sharp drainage and plenty of sun.

Family
Crassulaceae (Stonecrop family)
Grows as
Succulent, Perennial
Light
Full sun
Water
Water deeply and let the soil dry out fully between waterings; avoid wet crowns.
Soil
Gritty, fast-draining mix such as cactus or succulent compost with added grit.
Temperature
Hardy to about -20 °C; tolerates heat well, and protect from prolonged wet cold.
How easy
Easy
Native range
N. Spain to Alps and Appennini
Climate
temperate

About

Sempervivum arachnoideum, the cobweb house-leek, is a species of flowering plant in the family Crassulaceae, native to European mountains, in the Alps, Apennines and Carpathians. Growing to 8 cm (3 in) tall by 30 cm (12 in) wide, it is a rosette-forming succulent perennial, valued in cultivation for its ability to colonise hot, dry areas via offsets.

The specific epithet arachnoideum refers to its furry central rosettes (long ciliate leaf margins), resembling spider webs.

Other Sempervivum plants

Hen and chickens · Houseleek · Limestone Houseleek · Teneriffe Houseleek · Jovibarba globifera · Sempervivum pittonii · Common houseleek · Houseleek

Text excerpted from the Wikipedia article Sempervivum arachnoideum by its contributors, under CC BY-SA 4.0; the excerpts and the care summary drawn from them are shared under the same licence.

The care summary was written by AI (Claude, Anthropic) from the sources on this page, with general growing knowledge where they are silent. Check before relying on it.

Life form, climate and native range: World Checklist of Vascular Plants, Royal Botanic Gardens, Kew (CC BY 3.0), reformatted; see Plants of the World Online.

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