Celmisia walkeri Kirk
Celmisia walkeri is a spreading subshrub with pure white ray florets.
Celmisia walkeri was described by Thomas Kirk. The name is considered as validly published.
The subshrubs reach heights of 20 to 30 centimetres.
Wood and Bark
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.
Celmisia walkeri is native to New Zealand's South Island.
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 -12Â°C (USDA zone 8).
Suited for rockeries, as well as suited as groundcover.
Maintenance and Propagation
Propagate by sowing seed in a cold frame when seeds are ripe.
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.
- 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.