: Amur cork tree
: Introduced to the United States in 1856. The Harvard University Arnold Arboretum was the first to acquire this tree in 1901.
: Medium, deciduous tree; reaches heights of 50 ft, flat-topped as it matures.
: Dark green above and much paler below in color, yellow in the fall, 11-14 in long. Pinnately compound, 5-13 slender papery leaflets.
: Short, dark gray trunks with deeply ridged and corky bark.
: Upright clusters, small, maroon to yellow-green in color, 2-3 in long; blooms late spring to early summer.
Fruit and seeds
: Fruits form clusters, fleshy, back in color, 3/8 in in diameter, remain on trees into the late fall and winter. Each small berry contains 5 seeds.
: Native to Eastern Asia. Found in forested areas and along rivers.
: By seed.
: Japanese corktree (P. japonicum
), Lavalle corktree (P. lavallei
), and Sakhalin corktree (P. sachalinense
Monitoring and rapid response
: Hand pull seedlings, focus on reducing or stopping fruit production and spread. Effectively controlled using any of several readily available general use herbicides such as glyphosate. Natural enemies include four fungi and nine Lepidoptera species.
: The information provided in this factsheet was gathered from the U.S. Forest Service.
Individual species images that appear with a number in a black box are courtesy of the Bugwood.org network (http://www.invasive.org).Individual photo author credits may not be included due to the small display size of the images and subsequent difficulty of reading the provided text. All other images appear courtesy of Google (http://images.google.com).