Japanese Knotweed

Japanese Knotweed

Fallopia japonica 

Family Name:


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.

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Visit Washington State Noxious Weed Control Board Here