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Further information on knotweed

The following links will take you to a range of further useful information.

Regional control initiatives:

Continue reading

Environment Agency Code of Practice for the management of Japanese knotweed

Government policy

International Initiatives

  • The Knotweed Alliance is run by Cabi, International leaders in research on Japanese knotweed including possible natural control measures.
  • The International Union for the Conservation of Nature's (IUCN) Invasive Species Specialist Group (ISSG).
  • The Knotweed Action Group was set up to promote better understanding and management following an International Conference in Zurich in 2014.

Further information and publications

  • The Japanese Knotweed Manual by Lois Child and Max Wade (Packard Publishing Limited, Forum House, Stirling Road, Chichester, West Sussex. ISBN 1-85341-127-2) provides a comprehensive account of the problems associated with knotweed, as well as practical advice on managing the problem
  • The Welsh Government has produced a model specification and tender document that also contains useful information regarding knotweed. It can be downloaded from the Non Native Invasive Species Secretariat.


©  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 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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