Japanese Knotweed
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Fallopia japonica |
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| Family Name: |
Polygonaceae |
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| Class: | B | |
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| 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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More Information:
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Visit Washington State Noxious Weed Control Board Here
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