Kousa dogwood (Cornus kousa) is a small deciduous tree from East Asia, grown mainly for its showy white spring bracts, red autumn foliage and edible red berries. It is a species, not a genus; the key to growing it is a sheltered, well-drained spot with enough moisture and acidic soil.
Family
Cornaceae (Corn family)
Grows as
Tree
Light
Full sun, Part shade
Water
Water deeply during dry spells, especially in the first few years, and keep the root zone moist but not waterlogged.
Soil
Moist, well-drained, slightly acidic loam enriched with organic matter.
Temperature
Hardy to about -25 °C; provide shelter from harsh winter wind and late frosts.
How easy
Easy
Safety
Not known to be toxic
Edible
Yes, some parts
Native range
Sikkim, China to Temp. E. Asia
Climate
temperate
About
Cornus kousa is a small deciduous tree in the flowering plant family Cornaceae. Common names include kousa, kousa dogwood, Chinese dogwood, Korean dogwood, and Japanese dogwood.
The tree grows up to 10 metres (33 feet) tall. Whitish bracts appear in spring, along with cymes of yellowish flowers. The fruit is a red berry about 2 cm (3⁄4 in) wide.
How to grow it
Hybrids between C. kousa and C. florida (Cornus × rutgersensis Mattera, T. Molnar, & Struwe) and C. kousa and C. florida (Cornus × elwinortonii Mattera, T. Molnar, & Struwe) have been created by Rutgers University. Several selected for their disease resistance and good flower appearance have been named, patented, and released.
Cultivars include:
Where it grows
It is a plant native to East Asia including Korea, China, and Japan. Widely cultivated as an ornamental, it is naturalized in the state of New York.
Uses
The berry pulp is edible, with a similar flavour to a ripe persimmon. The rind of the berries is edible but usually discarded because it is tough with a bitter taste.
Text excerpted from the Wikipedia article Cornus kousa by its contributors, under CC BY-SA 4.0; the excerpts and the care summary drawn from them are shared under the same licence.
The care summary was written by AI (Claude, Anthropic) from the sources on this page, with general growing knowledge where they are silent. Check before relying on it.
Life form, climate and native range: World Checklist of Vascular Plants, Royal Botanic Gardens, Kew (CC BY 3.0), reformatted; see Plants of the World Online.