Nationwide herbicide treatment, monitoring and long‑term Knotweed control for residential, commercial and development sites.
Experts in Long‑Term Herbicide Control & Management
IVM provides fully compliant Japanese Knotweed herbicide treatment programmes for residential, commercial and development sites. Our treatment approach is built around the IVM ‘FAST’ System — a specialist herbicide method we designed to deliver reliable, long‑term suppression and mortgage‑compliant control. If you're unsure whether the plant on your land is Knotweed, our guide to Knotweed Lookalikes can help you confirm before taking action.
Nearly Two Decades of Specialist Knotweed Treatment Experience
Since 2007, we have delivered herbicide treatment, monitoring programmes and long‑term management plans across the UK. Our team supports homeowners, surveyors, developers and commercial clients, ensuring safe, effective and fully documented Knotweed control. If you’ve just discovered Knotweed and aren’t sure what to do next, our guide on What To Do If You Have Knotweed provides a clear step‑by‑step overview.
Qualified, Accredited & Highly Experienced
Our directors bring over 95 years of combined industry experience. All herbicide works follow strict Health & Safety, environmental and application protocols, with all operational staff holding PA1, PA6 and PA6AW pesticide application qualifications. These nationally recognised certifications ensure safe, compliant treatment across residential, commercial and near‑water environments. You can also learn how herbicide treatment compares to excavation in our guide to Excavation vs Herbicide.
PCA‑Accredited & Lender‑Approved
As a PCA‑registered contractor, we provide herbicide‑based Knotweed Management Plans (KMPs) accepted by all major mortgage lenders. For more detail on how lenders assess risk, see our guide to Knotweed & Mortgages.
Clear, Transparent Support
All quotations, treatment plans and monitoring reports are clear and easy to understand. We work closely with surveyors, developers and homeowners to meet timelines, manage budgets and ensure full regulatory compliance. For legal responsibilities relating to Knotweed, including property boundaries and development sites, see Knotweed & the Law.
Nationwide Coverage
With offices in Birmingham, the Midlands, Cambridgeshire and Oxfordshire, we provide nationwide herbicide treatment and monitoring services. All surveyors hold the CSJK qualification, ensuring accurate assessment and compliant treatment planning. You can also explore real‑world outcomes in our Case Studies.
For fully compliant Japanese Knotweed herbicide treatment on residential or commercial sites, speak to the experts — Contact IVM.
Herbicide treatment is the most practical and cost‑effective method of managing Japanese Knotweed when:
• Full excavation is not required or not feasible
• The infestation is located on boundaries or landscaped areas
• Long‑term suppression is acceptable for the site
• Mortgage lenders require a PCA‑compliant management plan
• Minimal disruption and low‑impact control is preferred
The IVM ‘FAST’ System
Our proprietary herbicide programme designed in‑house to deliver reliable, long‑term control. The FAST System uses staged applications, seasonal timing and targeted follow‑up to suppress regrowth and meet mortgage‑compliance requirements.
Stem Injection
A precise, low‑volume method ideal for sensitive sites, watercourses and areas where drift must be avoided. Herbicide is injected directly into the stem for maximum uptake.
Foliar Application
Controlled spraying of mature foliage during peak growth. This method is used as part of the FAST System to ensure consistent absorption and long‑term suppression.
All herbicide treatment programmes include:
• PCA‑compliant Knotweed Management Plans
• Seasonal treatment schedules
• Monitoring reports and photographic evidence
• Site plans and treatment maps
• 10‑year guarantees (insurance‑backed options available)
For Japanese Knotweed herbicide treatment, monitoring or FAST System enquiries, please contact your nearest IVM office:
IVM Midlands Office
Hill Top, 11 Ley Rise, Sedgley, West Midlands, DY3 3EUIVM Cambridge Office
118 Greenhaze Lane, Great Cambourne, Cambridge, CB23 5BHIVM Sales Office
2 Stone Cross, Water Orton, Birmingham, B46 1NAIVM South West Office
Orchard Way, Witney, Oxford, OX28 4EPFor more details about how we support our clients, including guidance on surveys, treatment plans and aftercare, you can visit our Customer Service page using the link below.
Customer Service