Sempervivum arachnoideum 'Robin'
Cobweb Houseleek, Spider Web Hens and Chicks
Sempervivum arachnoideum 'Robin' is a beautiful succulent that forms small webbed rosettes of pointy leaves that emerge silver in spring, turning bluish-green with prominent red tips and tinges of silver throughout the season. The rosettes produce many offsets on long stolons, forming clumps 12 inches (30 cm) in diameter. Flowers are pink star-shaped with dark red bracts and rise in clusters above the foliage in mid-summer.
USDA hardiness zone 4a to 10b: from −30 °F (−34.4 °C) to 40 °F (+4.4 °C).
How to Grow and Care
Because of the variability of Cobweb Houseleek, they easily adapt to the local conditions, and due to the small gene pool, they become a form or variety quite quickly, perfectly adapted to the local conditions of heat and cold as well as the amount of snow or rain and at which times of the year.
Relatively easy to grow in a container or rock garden, scree bed, wall crevice, trough, or alpine house. They are ideal in many ways, as they quickly start to form very tight clusters of rosettes, filling in Sempervivum walls, mosaics, and topiary, and their shallow yet fibrous root systems hold soil in place even in vertical plantings. 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.
This succulent is a cultivar of Sempervivum arachnoideum.
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