Japanese knotweed (fallopia japonica) is a perennial invasive plant. it is a problem because:

  • it spreads easily via rhizomes and cut stems or crowns
  • it thrives on disturbance and the tiniest piece can re-grow
  • it is difficult to control or eradicate
  • it can cause structural damage to buildings

Report Japanese knotweed

What the law says

Japanese knotweed is listed under the Wildlife and Countryside Act 1981 as a plant that is not to be:

  • planted or
  • otherwise introduced into the wild

The Environmental Protection Act 1990 also lists it as 'controlled waste' to be disposed of properly. There is a legal obligation not to cause it to spread if it occurs on your land.

If you have Japanese knotweed on your land

Japanese knotweed may be causing a private nuisance to surrounding properties. You should control the Japanese knotweed to prevent further spreading.

You can read about how to eradicate Japanese knotweed on the Environment Agency website. 

When we take action

If Japanese knotweed on a neighbouring property is causing a nuisance to you, we would always recommend that you:

  • co-operate with the landowner and
  • seek to control the problem amicably, rather than resort to legal action

This is an issue under Common Law and the Council has no powers in this situation.

When we may get involved

In extreme cases, we may be able to take action under the Antisocial Behaviour Crime and Policing Act 2014, however, it is recommended you discuss your concerns with the landowner prior to contacting us.