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Knotweed Shrub Complex: Identification, Biology, and Management

Being able to correctly identify the five knotweeds that grow in the Northwest can help you choose the best control strategies. Color photographs of the weeds accompany a detailed chart describing the stems, leaves, and flowers of Japanese, giant, Bohemian, and Himalayan knotweeds and low Japanese fleeceflower. Management strategies discussed include cultural, mechanical, and biological control methods as well as the use of herbicides.

PNW 610    Published October 2009    8 pages
Reviewed:
March 2016