Illinois Exotic Species:
Amur cork tree Phellodendron amurense

Amur cork tree was introduced into the United States from eastern Asia about 1874. It is frequently planted as an ornamental. This deciduous tree may grow to a height of about 35 feet and produce a wide crown. The compound leaves are dark green and composed of five to 13 leaflets. Male and female flowers occur on separate trees. Flowering occurs in June. Clusters of fleshy, black berries remain on the trees into the late fall and winter. This plant has become an invasive species because it adapts well to many different growing conditions, has no serious pests and produces large numbers of seeds.

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