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.
The species has been found in the Rocky Mountains, Cascades, Sierra Nevada, Appalachians, and Great Lakes region. It is designated as a harmful plant in New York, Pennsylvania, and most of New England.