Polygonaceae; Knotgrasses and Knotweeds: Part two!

Last week we talked about the more prominent genera and species of the Polygonaceae, this week about the other group, which has one famous non native weed: the Japanese knotweed. As we have all heard about this infamous one I would like to explore a little bit about its positive site, if there is any, and if there is anything we can do about its spread.

Japanese knotweed and native bindweed looking beautiful and innocent near my allotment boundary!
Japanese knotweed and native bindweed looking beautiful and innocent near my allotment boundary!

Japanese knotweed (Fallopia japonica) is a fast-growing and strong clump-forming perennial, with tall, dense annual stems. Stem growth is renewed each year from the stout, deeply-penetrating rhizomes (creeping underground stems). It is a very costly affair to have it removed see more here:

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