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Cobweb Houseleek
Scientific Name: Sempervivum arachnoideum L.
Synonym:
Family: Crassulaceae
Cobweb Houseleek (Sempervivum  arachnoideum)
Sempervivum arachnoideum 'Cebennense' at the Huntington Gardens in early July
Recommended Temperature Zone:
sunset: All zones
USDA: 7-11

Frost Tolerance: Hardy at least to 10F (-12C)

Heat Tolerance: Very questionable, avoid full sun in Phoenix in summer, should be probably kept inside behind a sunny window when the temperature exceeds 100F (-36C)

Sun Exposure: Shade in phoenix in summer

Origin: Europe

Growth Habits: Clumping rosettes forming mats up to 1 foot in diameter (30 cm); each rosette is small, with the leaves connected together by spriderweb-like fibers.

Watering Needs: Moderate water

Propagation: Offsets


Blooming Habits:
Blooms in summer. The rosette that bloomed then dies after setting seeds.

Fruiting Habits:

Check for Field Collection numbers at Ralph Martin's Site


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Desert-Tropicals is dedicated to provide gardening advice, gardening ideas, and information about flower of all kind for landscape and collections. We try to check carefully the identification of the plants on the illustrations as well as the other information from the page, but occasionally errors do occur. if you notice anything that needs to be changed please contact us. Thanks.

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