University of Tennessee
Forest Resources AgResearch and Education Center
Our Center Home Page Arboretum Home Page

Amur Cork Tree (Phellodendron amurense)

Amur Cork Tree Amur Cork Tree, a native of eastern Asia, was introduced into the eastern U.S. in the mid-1800's. Since then It has been widely planted as an ornamental and street tree. Over time it has become naturalized, spreading into forests where it can outcompete native deciduous species such as oaks and hickories.

Amur Cork Tree is considered an invasive species in a number of states. Two specimens of Amur Cork Tree were planted in the Arboretum's Shade Tree Collection in 1966. Numerous seedlings and saplings are found throughout the Arboretum and are removed along the trails as time and resources permit.

Amur Cork Tree is dioecious - individuals have either male or female flowers. Small yellow/green flowers appear in late spring and develop into abundant small black fruits (drupes) with large numbers of seeds that are dispersed by birds. In China, Japan, and India, the bark has been used for medicinal purposes. The yellow inner bark is used as a dye. "Wood turners" use the lightweight, yellow-colored wood to make decorative vases and pots. Since the wood is rot resistant, it has also been used for railings and erosion control structures.

Amur Cork Tree Bark Amur Cork Tree Leaves Its common and scientific names refer to the thick, deeply fissured, corky bark. It grows to heights of 30 to 50 ft, with massive, widely spreading branches, and it has opposite, pinnately compound, dark green leaves with 5 to 13 leaflets.

Return to Tree List

University of Tennessee - Forest Resources AgResearch and Education Center
901 South Illinois Avenue, Oak Ridge, Tennessee 37830 · Telephone: 865-483-3571 · Email: UTforest@utk.edu