Cornus kousa

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Cornus kousa Hance

Cornaceae

Life form: shrub
Usage: ornamental plant

Exposure: sun - Exposure: half shade   5

Moisture: moderately moist

Soil: sandy loam - Soil: gritty loam - Soil: sandy clay

Arrangement: opposite
Leaves: decidious

Shape: ovate

Division: simple

    

Shape: cruciform
Fruit: drupe

VI

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Inflorescence: capituli

Petals: single
Habit: erect

Canopy: broadly conical

Taxonomy

Divisio:
Magnoliophyta
Subdivisio:
Magnoliophytina
Classis:
Rosopsida
Subclassis:
Cornidae
Superordo:
Cornanae
Ordo:
Cornales
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Cornus kousa is a shrub.

Contents

Naming

F. Buerger already described Cornus kousa but the name was validly published by Henry Fletcher Hance.

Taxonomy

Cornus kousa is a species in the genus Cornus which contains approximately 67 to 87 species and belongs to the family of the Cornaceae (Dogwood Family). The type species of the genus is Cornus mas.

Characteristics

Cornus kousa - leaves
Cornus kousa - branches
Cornus kousa - fruits

Growth

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.

Leaves

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.

Root System

The plants form shallow roots.

Distribution

Cornus kousa is native to Japan and Korea.

Cultivation

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 -29°C (USDA zone 5).

Classification after Prof. Dr. Sieber

  • open areas

Tolerance of special soil conditions

  • high: city climate

Uses

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.


Cultivars

Pests and Diseases

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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