Chinese Knotweed
Koenigia weyrichii
Koenigia weyrichii, the Chinese knotweed or Weyrich's knotweed, is a large, perennial, rhizomatous herb native to northeastern Asia in Kamchatka, Sakhalin, and northern and central Japan. It is also locally naturalised in northern Europe.
- Scientific name
- Koenigia weyrichii
- Family
- Polygonaceae