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Cornwall Council advice for managing Japanese knotweed
Cornwall Knotweed Forum
Devon Knotweed Forum
Environment Agency advice of managing Japanese knotweed
Environment Agency Knotweed Code of Practice for developers
For more information on natural/ biological control:
Biological Control Information Center
Biocontrol news and information
CSIRO weed biocontrol overview
The Biological Control of Weeds Book – Landcare research
For more information on Invasive Species:
CABI invasive species compendium
Global Invasive Species Database
Invasive Species Specialist Group
Non-native Species Secretariat (NNSS)
USA National Invasive Species Information Center
Other:
Wildlife & Countryside Act