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[1] [2] Common names include Japanese knotweed [2] and Asian knotweed. [3] It is native to East Asia in Japan , China and Korea . In North America and Europe , the species has successfully established itself in numerous habitats, and is classified as a pest and invasive species in several countries.
Polygonum californicum is a species of flowering plant in the buckwheat family known by the common name California knotweed.It is native to the west coast of the United States from Washington, Oregon, and northern and central California in the Coast Ranges and Sierra Nevada foothills as far south as Napa and Tulare Counties.
Reynoutria is a genus of flowering plants in the Polygonaceae, also known as the knotweed or buckwheat family.The genus is native to eastern China, Eastern Asia and the Russian Far East, although species have been introduced to Europe and North America. [1]
The California Department of Resources Recycling and Recovery (also known as CalRecycle) is a branch of the California Environmental Protection Agency that oversees the state's waste management, recycling, and waste reduction programs. CalRecycle was established in 2010 to replace the California Integrated Waste Management Board.
Reynoutria sachalinensis, the giant knotweed or Sakhalin knotweed, (syns. Polygonum sachalinense , Fallopia sachalinensis ) is a species of Fallopia native to northeastern Asia in northern Japan ( Hokkaidō , Honshū ) and the far east of Russia ( Sakhalin and the southern Kurile Islands ).
Illustration from the Japanese agricultural encyclopedia Seikei Zusetsu (1804) Persicaria is a genus of herbaceous flowering plants in the knotweed family, Polygonaceae. Plants of the genus are known commonly as knotweeds [2]: 436 or smartweeds. [3] It has a cosmopolitan distribution, with species occurring nearly worldwide.
Persicaria capitata, the pink-headed persicaria, [2] pinkhead smartweed, [3] pink knotweed, Japanese knotweed, or pink bubble persicaria, is an Asian species of plants in the genus Persicaria within the Polygonaceae (US: buckwheat) family.
Aphalara itadori, the Japanese knotweed psyllid, is a species of psyllid from Japan which feeds on Japanese knotweed (Reynoutria japonica).. The UK Government licensed the use of this species as a biological control to counter the spread of Japanese knotweed in England; this was the first time that biological control of a weed was sanctioned in the European Union.