Sempervivum globiferum

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Sempervivum globiferum L.

Crassulaceae

Life form: perennial
Usage: ornamental plant

Exposure: sun   7

Moisture: moist

Soil: gritty loam

Arrangement: rosette
Leaves: evergreen

Shape: lanceolate

Division: simple

Shape: many-stellate
Fruit: follicle

3D / efe981 

Inflorescence: cyme

Petals: single
Habit: not specified

Growth form: mat-forming

Taxonomy

Divisio:
Magnoliophyta
Subdivisio:
Magnoliophytina
Classis:
Rosopsida
Subclassis:
Rosidae
Superordo:
Saxifraganae
Ordo:
Saxifragales

Sempervivum globiferum is a succulent perennial.

Naming

Sempervivum globiferum was described by Carl Linnaeus in 1753. The name is considered as validly published.

Taxonomy

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.

Characteristics

Growth

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.

Leaves

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.

Root System

Distribution

Sempervivum globiferum is native to the Alps.

Cultivation

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 -18°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)
  • rockeries

Uses

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.

Cultivars

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.

Literature

  • Walter Erhardt, Erich Götz, Nils Bödeker, Siegmund Seybold: Der große 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.

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