It has been reported from the Rocky Mountains, the Cascade Range, the Sierra Nevadas and the Appalachian Mountains as well as the Great Lakes region. It is classified as a noxious weed in New York, Pennsylvania and much of New England.
Reported from the Rocky Mountains, Cascade Range, Sierra Nevadas, Appalachian Mountains, and Great Lakes region; classified as a noxious weed in New York, Pennsylvania, and much of New England.