Sempervivum globiferum L.
Sempervivum globiferum is a succulent perennial.
Sempervivum globiferum was described by Carl Linnaeus in 1753. The name is considered as validly published.
Sempervivum globiferum is a species in the genus Sempervivum which contains approximately 41 to 282 species and belongs to the family of the Crassulaceae (Stonecrop Family). The type species of the genus is Sempervivum tectorum.
The perennials have a mat-forming habit and reach heights of 4 to 8 centimetres. The plants reach a width of 10 to 20 centimetres.
Sempervivum globiferum is evergreen. The moss-green, simple leaves are in rosettes. They are lanceolate, ciliate and sessile.
Flowers and Fruits
Sempervivum globiferum produces cymes of ligth-yellow many-stellate flowers from June to August.
The perennials produce follicles.
Sempervivum globiferum is native to the Alps.
The perennials prefer a sunny situation on moist soil. The substrate should be comparatively poor with a pH between 4 and 6. The plants prefer gritty loam. They tolerate temperatures down to -18Â°C (USDA zone 7). Under glass use cactus compost or potting compost with added grit.
In summer the plants prefer moderate humidity, good ventilation. Classification after Prof. Dr. Sieber
- alpine garden (especially for plants that are not very competitive)
The recommended planting distance is 15 centimetres, the perennials are best planted in groups of 3 to 5. The perennials are suited for cultivation in a alpine house. Suited for rockeries and for roof greening, as well as suited as cemetery plant and as container plant.
Maintenance and Propagation
- For healthy growth apply cactus fertilizer monthly during growth.
- Water freely in summer, do not water in winter. allow the soil to become completely dry in between watering.
Propagate by sowing or by division.
Pests and Diseases
Brown, orange or yellowish pustules on shoots and on the leaves lower surfaces are very likely caused by a fungal infestation (rust). Remove affected parts and apply fungicide. Also improve ventilation and reduce humidity.
- Walter Erhardt, Erich GÃ¶tz, Nils BÃ¶deker, Siegmund Seybold: Der groÃe Zander. Eugen Ulmer KG, Stuttgart 2008, ISBN 978-3-8001-5406-7. (Ger.)
- Christoper Brickell (Editor-in-chief): RHS A-Z Encyclopedia of Garden Plants. Third edition. Dorling Kindersley, London 2003, ISBN 0-7513-3738-2.