Knotweed, Japanese

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Japanese Knotweed


	Fallopia japonica
	Family Name:	Polygonaceae
	Class:	B
	Other Names:
	Why is it a noxious weed?	It is a very aggressive escaped ornamental that is capable of forming dense stands, crowding out all other vegetation and degrading wildlife habitat. It can also create a fire hazard in the dormant season. It is difficult to control once established.

More Information:

Visit Washington State Noxious Weed Control Board Here