Also called Sakhalin knotweed, オオイタドリ (ooitadori), Горец сахалинский, Гречиха сахалинская, Polygonum sachalinense and Reynoutria sachalinensis.

Part of buckwheat/knotweed  family Polygonaceae.

Native to far eastern 🇷🇺 Russia, and northern 🇯🇵 Japan.   Invasive > 🌐︎ various Invasive > 🇨🇦 Canada, 🇺🇸 USA Invasive > report it! Invasive > Michigan   Treatment methods and timing (40–45°N lat.).  Adobe Acrobat Reader file

Uses by native peoples
(Ethnobotany database)

Learn more about giant knotweed Fallopia sachalinensis

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