Giant Knotweed
Polygonum sachalinensis |
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| Family Name: |
Polygonaceae |
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| Class: | B | |
| Other Names: | Sakhalin knotweed | |
| Why is it a noxious weed? | It creates dense colonies that exclude native vegetation and greatly alter natural ecosystems. Established populations are extremely persistent and difficult to eradicate, even very small fragments can form new plants. | |
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More Information:
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Visit Washington State Noxious Weed Control Board Here
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