Sedum nussbaumerianum

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Sedum nussbaumerianum Bitter

Crassulaceae

Life form: subshrub
Usage: ornamental plant

Exposure: sun   9

Moisture: moderately moist bis Moisture: moist

Soil: gritty loam

Arrangement: rosette
Leaves: evergreen

Shape: lanceolate

Division: simple

Shape: five-stellate
Fruit: follicle

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Inflorescence: cyme

Petals: not specified
Habit: not specified

Growth form: not specified

Taxonomy

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

Sedum nussbaumerianum, commonly known as coppertone stonecrop, is a succulent subshrub.

Naming

Sedum nussbaumerianum was described by Friedrich August Georg Bitter. The name is considered as validly published.

Taxonomy

Sedum nussbaumerianum is a species in the genus Sedum which contains approximately 395 to 759 species and belongs to the family of the Crassulaceae (Stonecrop Family). The type species of the genus is Sedum acre.

Characteristics

Growth

The subshrubs reach heights of 10 to 20 centimetres.

Wood and Bark

Leaves

Sedum nussbaumerianum is evergreen. The moss-green, simple leaves are in rosettes. They are lanceolate, entire and sessile.

Flowers and Fruits

Sedum nussbaumerianum produces cymes of white five-stellate flowers from February to March.

The subshrubs produce follicles.

Root System

Distribution

Sedum nussbaumerianum is native to Mexico.

Cultivation

The subshrubs prefer a sunny situation on fresh to moist soil. The substrate should be gritty loam. They tolerate temperatures down to -7°C (USDA zone 9). Under glass use loamy potting compost with added gravel.

In summer the plants prefer good ventilation.

Uses

Suited for desert gardens, rockeries and for troughs.

Maintenance and Propagation

  • For healthy growth apply a compound fertilizer at 50% concentration monthly during growth.
  • Water moderately in summer, give little water in winter.

Propagation

  • Sowing seed in a cold frame in autumn
  • Cuttings in early summer
  • Division in spring


Cultivars

Poisonousness

Sedum nussbaumerianum is toxic.

Aeskulap  Please read the health issues note

Pests and Diseases

Gnaw marks and slime trails indicate a problem with slugs. Prevent infestation by improving hygiene and by regularly working the soil. In case of an infestation use slug pellets or nematodes to control pest. Handpicking the slug also helps, do this preferably in the evening hours.

Damaged roots, withering, decolouration and dieback of leaves and shoots may be caused by stagnant moisture, fungi or bacteria. Remove affected plants. Prevent by improving hygiene and drainage.

Honeydew, galls and distorted leaves are a sign for an infestation with aphids. Use an insecticide or control biologically , e.g. with parasitic wasps or predators such as Aphidoletes aphidimyza.

Scale insects that sit on the undersides of the leaves and excrete honeydew can be controlled with insecticide or biologically with parasitic wasps.

Waxy fibres and honeydew on leaves and shoots indicate an infestation with mealybugs. Apply insecticide or control biologically with predatory ladybirds.

Small dark-coloured beetles feeding on the plants are very likely vine weevils. Their larvae feed on seedling, cuttings, roots and tubers. Handpick and destroy pests and improve hygiene. Additionaly use insecticide or biological control (nematodes).

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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