Japanese knotweedView or download sightings meta-data
Japanese Knotweed s.l. taxa
Large, bright green plants, with broad heart-shaped leaves. Often very tall from April onwards (in the South of the UK), plants may grow to more than 3 m (10 ft) tall, dwarfing most native plants and shrubs. Stems have the appearance of bamboo (tall, segmented and hollow), though they bear a superficial resemblance to rhubarb in colouration (red green) and texture (fleshy).
Often found in patches called stands, that may extend from just a few centimetres, to many metres in size. Stands are particularly common along railways, roads and in industrial areas. However, knotweed has a nasty habit of cropping up pretty much anywhere!
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