The horse chestnut tree, also known as Aesculus hippocastanum, is a member of the Buckeye family, which includes species that grow in the United States. It is a member of the Aesculus family. The horse chestnut is not a native tree in America, according to the Ohio Department of Natural Resources, growing in southern sections of Europe and Asia. However, the horse chestnut now grows in many parts of the United States, after its introduction as an ornamental species.
The horse chestnut’s flowers appear in the spring and they are white in color. The upright cluster of flowers can be from 5 to 12 inches in length. The fruit of the horse chestnut is round to oblong in shape and the exterior is covered with spines. The husk is thick and leathery, which protects the seeds within the fruit. There are generally one to three brown seeds within the husk. (Note: the nuts of the horse chestnut are not edible.)