Japanese Horse-chestnut (Aesculus turbinata) — identification, habitat & look-alikes

Japanese horse-chestnut is a large tree native to Japan, grown in U.S. arboretums and large gardens. Its large leaves spread like the fingers of a hand, and creamy white flower clusters stand upright in spring.

Appearance

Growth form: This is a large deciduous tree, reaching about 80 ft (24 m) in Japan but often staying near 40 ft (12 m) in cultivation.
Leaves: Each has five to seven broad leaflets arranged like the fingers of a hand.
Flowers: Creamy white flower clusters stand upright in spring; flowers often have a red spot.
Fruit: The fruit grows to about 2 in (5 cm) across. Its pear-shaped husk has low bumps rather than long prickles and usually holds one glossy brown seed.

Look-alikes

Horse-chestnutAesculus hippocastanum

Japanese Horse-chestnut fruit has low bumps but no long prickles. Horse-chestnut fruit has obvious prickles.

Why they get mixed upBoth are large trees with palmate leaves and upright clusters of pale flowers.

Where it lives

Typical habitats: arboretums
large gardens
Range: Its native range is Japan. In the United States it is mainly encountered as a planted specimen, including in Ohio arboretum collections.
Preferred conditions: It grows best in deep, fertile soil with adequate moisture.
Flowering: Flowers May
Flowers May

Growing it

Propagation: It can be grown from seed or cuttings.

Conservation

IUCN Red List: LCLeast ConcernLow risk of extinction

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