Sempervivum arachnoideum (Cobweb Houseleek)

Scientific Name

Sempervivum arachnoideum L.

Common Names

Cobweb Houseleek, Cobweb House-Leek, Spider Web Hens and Chicks, Spindelvävstaklök (Swedish)


Sempervivum sanguineum

Scientific Classification

Family: Crassulaceae
Subfamily: Sedoideae
Tribe: Sedeae 
Subtribe: Sedinae
Genus: Sempervivum


Color: Pink
Bloom Time: July


Sempervivum arachnoideum is a low-growing, evergreen, rosette-forming, perennial succulent, up to 3 inches (7.5 cm) tall and up to 12 inches (30 cm) wide, valued in cultivation for its ability to colonize hot, dry areas via offsets. The rosettes are up to 1 inch (2.5 cm) in diameter forming dense mats green leaves, flushed with red and with white hairs connected at tips. It flowers in July, with pink flowers that are raised on stems.

Sempervivum arachnoideum - Spider Web Hens and Chicks

How to Grow and Care

Relatively easy to grow in a container or in a rock garden, scree bed, wall crevice, trough or alpine house. After the plant blooms and sets seed, it will die, but there will be many offsets to take its place. Plant in well-drained succulent soil mix in full sun to light shade. Water regularly during the growing season and allow the soil to dry out before watering again. Water very little during the winter months.

Sempervivum arachnoideum can get vine weevil and may be subject to rust. Propagate by seed sown in spring or root offsets in spring… – See more at: How to Grow and Care for Sempervivum arachnoideum.


Mountain of Europe from the Pyrenees to the Carpathians.


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