Celmisia walkeri

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Celmisia walkeri Kirk

Asteraceae

Life form: subshrub
Usage: ornamental plant

Exposure: sun - Exposure: half shade   8

Moisture: moist

Soil: sandy loam - Soil: sandy clay

Arrangement: rosette
Leaves: evergreen

Shape: linear

Division: simple

Shape: many-stellate
Fruit: achene

VI

N999D / ffffff 

Inflorescence: solitary

Petals: not specified
Habit: not specified

Growth form: not specified

Taxonomy

Divisio:
Magnoliophyta
Subdivisio:
Magnoliophytina
Classis:
Rosopsida
Subclassis:
Asteridae
Superordo:
Asteranae
Ordo:
Asterales

Celmisia walkeri is a spreading subshrub with pure white ray florets.

Naming

Celmisia walkeri was described by Thomas Kirk. The name is considered as validly published.

Taxonomy

Celmisia walkeri is a species in the genus Celmisia which contains approximately 85 to 90 species and belongs to the family of the Asteraceae (Aster Family).

Characteristics

Growth

The subshrubs reach heights of 20 to 30 centimetres.

Wood and Bark

Leaves

Celmisia walkeri is evergreen. The mid-green, simple leaves are in rosettes. They are linear, entire and sessile.

Flowers and Fruits

Celmisia walkeri produces solitary white many-stellate flowers in June.

The subshrubs produce achenes.

Root System

Distribution

Celmisia walkeri is native to New Zealand's South Island.

Cultivation

The subshrubs prefer a sunny to half-shady situation on moist soil. The substrate should be sandy-loamy or sandy clay soil. They tolerate temperatures down to -12°C (USDA zone 8).

Uses

Suited for rockeries, as well as suited as groundcover.

Maintenance and Propagation

Propagate by sowing seed in a cold frame when seeds are ripe.

Cultivars

Pests and Diseases

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.

Fine webs on the plants indicate an infestation with red spider mites. These sap-sucking insects mainly appear under glass and can be controlled either with insecticide or biologically with parasitic mites.

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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