Japanese Barberry (Berberis thunbergii DC) was introduced in 1875 and promoted as an ornamental substitute for common barberry (Berberis vulgaris), which is a host for black stem rust. Prevalent in the East and Midwest of the United States, it forms dense stands that compete with native trees and plants (from USDA Plant Profiles).
USDA Plant Profiles provides background, maps of U.S. distribution, and links to selected federal, state and regional resources.
Invasive Plant Atlas of New England describes the history of introduction in New England, habitats where found, similar species, management options and additional resources.
Michigan Dept. of Natural Resources -- This 7-page illustrated PDF includes recommendations of specific chemicals to use for control, ways to dispose of the plant materials, and additional resources.
Invasive.org -- Post of USDA fact sheet that describes habitat, distribution, environmental impact, control and management, and references on Japanese barberry.
Last updated April 4, 2019