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Himalayan knotweed

(Persicaria wallichii )

A non-native invasive plant.

This plant has been grown in cultivation but is less popular today than in the past. It is still present in some gardens and is still available commercially from some nurseries.

It is a large plant, that can grow up to 2m tall.

Habitat

As with similar plants (like Japanese knotweed), Himalayan knotweed becomes established on stream sides, hedge banks, woodland edges, roadsides, railway banks and waste ground.

What's the problem?

Once established this plant grows into extremely dense stands that out-compete all native vegetation.

What are we doing about it?

FInd out more about Plantlife's invasive plant programme by clicking here.