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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.
Her distribution maps showed how the Knotweed hybrids spread across the UK. [6] An unusual hybrid knotweed, Conolly's knotweed, ×Reyllopia conollyana (syn. Fallopia × conollyana) was named in her honour in 2001 for her 84th birthday. [7] This is a hybrid between Japanese knotweed and Russian vine (Fallopia baldschuanica). [8]
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.
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]
It is sometimes found alongside Japanese knotweed and also tends to prefer shady areas and avoid direct sunlight. [citation needed] It is typically gregarious, growing in groups of several hundred individuals in one particular area, as well as in multiple small clusters of several mushrooms each, within close proximity of one another. Solitary ...
Knotweed is a common name for plants in several genera in the family Polygonaceae. Knotweed may refer to: Fallopia; Persicaria; Polygonum; Reynoutria. Reynoutria japonica or Japanese knotweed, a highly invasive species in Europe and North America
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 ).
Bohemian knotweed is a nothospecies that is a cross between Japanese knotweed and giant knotweed. It has been documented as occurring in the wild in Japan. [ 1 ] The scientific name is accepted to be Reynoutria × bohemica , [ 2 ] but it may also be referred to as Fallopia × bohemica and Polygonum × bohemicum .