Sempervivum are rosette forming hardy or half hardy annuals that range from 10 to 30 cm in height.
They bloom from the start to middle of summer, and carry small stellar flowers of pink, red, yellow or white.
Their size makes them ideal for use in rock gardens and borders.
Some common names for Sempervivum plants include Live Forever, Houseleek. and St. Patrick's Cabbage.
Sempervivum tectorum by blumenbiene.
Sempervivum reinhard by brewbook.
As a member of the Crassulaceae family, Live Forever is closly related to the Sedum plant genera.
It is best to grow Live Forever and other Sempervivum from offsets as seed-grown plants may not always be attractive.
When growing Sempervivum from seeds outdoors then sow on the surface in the spring. They should be grown in a sunny part of the garden in a soil that is poor and dry.
If you plan to first grow plants indoors then they can be sown in either spring or summer, it takes from two to seven weeks for the seeds to germinate at a temperature of 20 to 28 degrees centigrade. The Sempervivum plants should be transplanted outdoors at a distance of 15 cm (small varieties) to 30 cm (larger species).
Sempervivum likes dry soil, so water only when very dry. Once blooming has finished dead-head the flowers. If you require more plants then it is best to grow from offsets.
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