Japanese knotweed Fallopia japonica

This vigorous and dominating non-native plant, known to damage buildings, is notoriously troublesome to eliminate. It is an herbaceous perennial with an appearance similar to bamboo.

Conservation status

Japanese knotweed is highly vigorous invasive non-native plant, that is difficult to control. Dense stands of it can dominate natural habitats, preventing native species from growing. It can also cause damage to buildings and hard structures, and is able to grow through walls and tarmac. Under the Wildlife & Countryside Act 1981 it is an offence to “plant or otherwise cause Japanese knotweed to grow” in the wild.

Details

Did you know?

A piece of rhizome weighing no more than 0.7 g, 300 mm below the surface, can generate new plants.

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Japanese knotweed How do I recognise it?

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