Methods of Japanese knotweed eradication on commercial sites that have been proven successful include the following:
Mechanical removal of knotweed plants and contaminated soil. Most effective when soil needs to be removed anyway, to make room for foundations. Quicker than chemical treatment.
Excavated knotweed plants and soil can be buried on-site or disposed of at a controlled waste facility. Knotweed must be encapsulated in a membrane and buried at least 2 m beneath the ground level.
Knotweed herbicide treatments take 3-5 years. Herbicides can be applied either by foliage spraying or direct stem injections into plant’s rhizomes. Considered more environmentally friendly, stem injections do cause collateral damage, hurting nearby native vegetation.
Make sure your PCA-approved contractor adheres to:
Infographic created by Japanese Knotweed Specialists – a PCA-accredited Japanese knotweed removal company providing effective solutions for eradication of invasive weeds on commercial sites across the UK. To consult your options for a bespoke knotweed management plan and eradication, or book your knotweed survey, contact our experts at 0800 122 3326.