6. Japanese Knotweed Management Plan Watford Borough Council

Aim: Control invasive non-native species

Water body: River Colne

Project description

Japanese Knotweed management plan treatment starting in March 2016 on Knutsford Playing Fields, Riverside and other parts of Watford Borough Councils Land

Riparian areas  

Knutsford Playing Fields, Winter die back of mature growth with new stems evident. 1,509m2
Lairage Land LNR,  Winter die back of mature growth with new stems evident. JK noted to be impacting third party residential properties. 234m2
Radlett Road Playing Fields,  Winter die back of mature growth with new stems evident. 1,188m2
Riverside Road Recreation Ground,  Winter die back of mature growth with new stems evident. 969m2
Waterfield Recreation Ground, Winter die back of mature growth with new stems evident. One occurrence was on third party land utilised as rail track. 533m2

2023 Update

The main controls by contractors Phlorum were completed in 2018, but they are contracted to come back until Japanese Knotweed has gone from specified Watford BC areas, they said they want to leave bonsai regrowth (which is present at a few points at Knutsford Playing Fields) till it comes back properly, and then they will hit it again.

Project lead: Watford Borough Council

Contact for more information: Paul Rabbitts