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General Information on Japanese knotweed

Japanese knotweed is a foreign invasive plant that is severely damaging our countryside and property. With your co-operation it can be controlled.

Knotweed 'nots'

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  • Do not fly-tip Japanese knotweed, or any other garden waste.
  • Do not contaminate green waste composting schemes with knotweed material.
  • Do not accept topsoil unless you have first inspected it for knotweed rhizome.
  • Do not delay. If you find you have knotweed growing on your land you should eradicate it.
  • Do follow good practice for the control of knotweed.
  • Do ensure that herbicides are used safely and effectively.
  • Do ensure that knotweed is burned or composted thoroughly, within the curtilage of your property.
  • Do co-operate with neighbours to co-ordinate your knotweed control programme.

We have developed a series of detailed information sheets about Japanese knotweed which can be downloaded from our website.

© Cornwall Knotweed Forum.

The information on this page has been compiled by the Cornwall Knotweed Forum from information provided by its members and partners. It is provided in good faith to the raise awareness of the issues and to promote best practice in the control of Japanese knotweed. The information may be used freely for private and educational purposes but may not be copied for commercial use. We update information and advice on a regular basis. However the Cornwall Knotweed Forum, or any of its constituent members cannot be held responsible for the efficacy of the treatments described, or any damage to persons, property or the environment that arises from interpretation of the advice given.

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