Sempervivum

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Related to sempervivums: Houseleeks

Sempervivum

 

a genus of plants of the family Crassulaceae. They are perennial herbs with fleshy, alternate, sessile leaves (the lower leaves are in radical rosettes). The shoots that do not bear flowers are in the form of spherical rosettes. The regular, bisexual flowers are yellowish, pink, or purple and gathered in cymose-paniculate inflorescences. The double perianth is for the most part six-to 20-parted. The fruit is multiple.

There are approximately 30 species of Sempervivum, distributed in Europe, the Caucasus, Asia Minor, Southwest Asia, and northwestern Africa (Atlas). The plants grow on rocky slopes in alpine and subalpine zones. Eleven species are found in the USSR, primarily in the Caucasus. In the European USSR, they grow in dry, sandy places. The species S. zeleborii and S. soboliferum, which are often separated into the genus Jovibarba, are often found in pine forests. The young rosettes and leaves of S. soboliferum are edible. Many species of Sempervivum are cultivated as ornamentals.

References in periodicals archive ?
WHAT YOU'LL NEED: Old colander Compost Small Sempervivum and sedum plants (look for them in the alpines section of a garden centre) Decorative gravel or horticultural grit WATER WHAT TO DO: 1.
CURIOUS: Upright aeoniums, left, and low-growing sempervivums
Baby tears, like many aeoniums, sempervivums and other succulents, do best in filtered sunlight, but should not be planted in too much shade.
From tiny one-eighth inch sempervivums which colonize into small mounds, to saucer-size plants whose offspring necessarily reach a little farther afield, they all increase by auxiliary stolons.
Included among these plants are cacti and such succulents as aloes, cotyledons, crassulas, echevarias, haworthias, sedums, and sempervivums.
Gloria, by email: I grow encrusted saxifrages and sempervivums in a little dry stone wall I have here.
While you may be familiar with only one or two forms of Hens and Chickens, Sempervivums, most nurseries will offer a half-dozen different kinds - and specialists list 60 variant forms, from huge to tiny cobwebbed.
Sempervivums are slow-spreading evergreen perennials that propagate themselves by producing tiny new rosettes, giving rise to their name which translates from Latin as ``always alive'' They are ideal for people with little growing space as a collection can be displayed in a small raised bed, a trough or even in a tub on a balcony but they need full sun and gritty, quick-draining poor soil.
Aeoniums, echeverias, and sempervivums form rosettes; agaves and aloes have fleshy, pointed leaves that give them a fountain shape.
But where were my treasured cushions of sempervivums (houseleeks)?