Japanese knotweed information and FAQs 

The Environet website is designed to clarify some of the myths relating to Japanese knotweed, and to provide you with a valuable resource of impartial information, gained from many years experience, to help you understand the problems knotweed creates. We hope you find it a useful resource.

Within these pages we explain the history of Japanese knotweed, help you identify it with photos and videos, the problems it can cause, the law relating to Japanese knotweed and provide guidance on the various treatment options available for its control and eradication.

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