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Japanese knotweed

Japanese knotweed is an invasive species of plant and is the fastest growing in the UK.

Due to staff shortages, we unfortunately don't have the capacity for new queries or requests at this time. We hope to be able to take on new work in September. Apologies for any inconvenience.

Knotweed can grow virtually anywhere and causes many problems including loss of native plant species, physical damage, rapid spread, reduction in land values and difficulty in obtaining mortgages.

Knotweed grows in virtually all habitats and soil types and its growth is not dependent on climate. In Swansea it is found on beaches, grassland, wet ground, along water courses, in gardens, derelict land, graveyards and railway embankments and hedges.

How to identify Japanese knotweed (PDF) [871KB]

Control of Japanese knotweed

Japanese knotweed is extremely difficult to get rid of completely due to the fact that even small pieces of the plant can grow into new plants.

We offer a treatment service for landowners to help control the spread of Japanese knotweed.

Japanese knotweed treatment FAQs

Frequently asked questions about our treatment service for Japanese knotweed.

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