horsechestnut Hippocastanaceae Aesculus hippocastanum L. Listen to the Latin symbol: AEHI Other Fact Sheets
Leaf: Opposite, palmately compound leaf with usually 7, obovate, serrate leaflets (4 to 6 inches long), dark green above and paler below, petioles as long as leaflets.
Flower: Creamy white in a large showy upright cluster, 5 to 8 inches long, appear in spring.
Fruit: Nearly round with thick, leathery very spiny husks enclosing 1 to 3 smooth, chestnut brown seeds.
Twig: Stout, with a large shield-shaped leaf scar; terminal buds are large (1/2 to 1 inch); shiny, sticky and reddish brown, lateral buds are much smaller.
Bark: Light to dark brownish gray, developing irregular scaly, rough ridges.
Form: Upright, 40 to 60 feet tall with a round or oblong crown, 1 to 2 feet in diameter.

Looks like: yellow buckeye - Ohio buckeye - red buckeye
leaf flower fruit twig bark form1 map
Additional Range Information:
Aesculus hippocastanum is planted in the USDA hardiness zones shown above and may seed into the landscape. See states reporting horsechestnut.
External Links:
USDA Plants Database
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Photos and text by: John Seiler,
Edward Jensen, Alex Niemiera,
and John Peterson
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