Invasive species survey & control: London Borough of Hounslow

The client: London Borough of Hounslow

The site: River Thames near Chiswick Bridge

The brief: Provide advice on managing a large patch of Japanese knotweed growing along the bank and blocking a point of view for the Oxford and Cambridge Boat Race held in April.

Our solution: Our PCA-certified Japanese knotweed consultant and Contracts Manager met with the client to discuss the legal considerations and appropriate treatment options. This led to the production of a Japanese knotweed Management Plan supported by an AqHerb licence to the Environment Agency for use of herbicide next to water.

The result: The timing of the initial site visit in late 2018 meant that the window for treatment had been missed. Instead, we were able to recommend a programme of cane clearance before the 2019 race and an implementation plan for herbicide treatment for a minimum of three years.

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