Cornus kousa Hance
Cornus kousa is a shrub.
F. Buerger already described Cornus kousa but the name was validly published by Henry Fletcher Hance.
The shrubs are comparatively slow-growing and reach heights of 6 to 7 metres. The plants reach a width of 4 to 5 metres.
Wood and Bark
The bark is black.
Cornus kousa is deciduous. The green, simple leaves are opposite. They are ovate, entire and petiolate. They turn an attractive dark red in autumn.
Flowers and Fruits
Cornus kousa produces capituli of erect, white cruciform flowers in June. The plants flower on older shoots. They are hermaphroditic.
From summer to autumn the shrubs produce red drupes that are both edible and very ornamental.
The plants form shallow roots.
Cornus kousa is native to Japan and Korea.
The shrubs prefer a sunny to half-shady situation on moderately moist soil. The substrate should be sandy-loamy, gritty-loamy or sandy clay soil with a pH between 4 and 6. They tolerate temperatures down to -29Â°C (USDA zone 5).
Classification after Prof. Dr. Sieber
- open areas
Tolerance of special soil conditions
- high: city climate
Suited for rooftop gardens, as well as suited as avenue tree and as container plant.
Maintenance and Propagation
The plants usually need very little maintenance.
Pests and Diseases
- Walter Erhardt, Erich GÃ¶tz, Nils BÃ¶deker, Siegmund Seybold: Der groÃŸe 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.