Horsechestnut Buckeyes and horsechestnuts are deciduous trees with large winter buds having several pairs of outer scales.
Leaves are opposite, long-petioled, and palmately compound with five to nine toothed leaflets.
Flowers are borne in upright, many-flowered panicles and are showy. Fruit is a large, fleshy nut. I. Winter buds are sticky and resinous. Buds are larger and more sticky than others in the genus. The blooms are borne in May or June.