# Knotweed

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> Source: https://en.wikipedia.org/wiki/Knotweed
> Source revision: 1292425531
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**Knotweed** is a common name for plants in several genera in the family [Polygonaceae](/source/Polygonaceae). **Knotweed** may refer to:

- *[Fallopia](/source/Fallopia)*
- *[Persicaria](/source/Persicaria)*
- *[Polygonum](/source/Polygonum)*
- *[Reynoutria](/source/Reynoutria)* - *[Reynoutria japonica](/source/Reynoutria_japonica)* or Japanese knotweed, a highly invasive species in Europe and North America

## See also

- [Knotgrass](/source/Knotgrass)

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Adapted from the Wikipedia article [Knotweed](https://en.wikipedia.org/wiki/Knotweed) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/Knotweed?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.