The scientific or taxonomic name would be Polygonumspp.
The scientific or taxonomic name would be Polygonum douglasii.
Japanese knotweed is a herbaceous perennial plant. It can be found in Japan or you can buy it on the internet or at various gardening stores.
Japanese knotweed is a pernicious weed and should be avoided at all costs.
Yes, knotweed is an entirely introduced species.
Tom Heutte has written: 'Japanese knotweed' -- subject(s): Control, Invasine plants, Japanese knotweed
knotweed
Because
"Japanese Knotweed is an invasive and destructive weed that can be found in neglected areas and roadsides. It should not be watered, but should be treated and removed."
Japanese Knotweed is known variously as Fallopia japonica, Polygonum cuspidatum and Reynoutria japonica.I do not have enough botanical knowledge to say which is the correct name.
Knotweed
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