Welcome to Japanese Knotweed Alliance:

CABI International

CABI
DEFRA
Environment Agency
Welsh Assembly Government
South West Regional Development Angency
Network Rail
Cornwall County Council
British Waterways

Japanese knotweed is one of the most high profile and damaging invasive weeds in Europe and North America.

Japanese Knotweed in flower

 

In the UK, Defra's Food and Environment Research Agency (Fera) are currently considering the release of the highly specialist psyllid - Aphalara itadori - to control Japanese knotweed.  


Here you can watch a presentation by Dick Shaw, the project's lead scientist.

The presentation may take a moment to download due to the size of the file, so please be patient.

 

For further information, please use the links on the left, or download an information pack which will provide you with information about the plant, the project and the scientific research carried out. 

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