Japanese knotweed
Enw gwyddonol: Fallopia japonica
Introduced from Japan in the 19th century, Japanese knotweed is now an invasive weed of many riverbanks, waste grounds and roadside verges, where it prevents native species from growing.
Species information
Category
Ystadegau
Height: up to 2mStatws cadwraethol
Invasive, non-native species.