Japanese Knotweed Removal
Three proven routes to eradication, priced transparently and delivered by PCA-qualified specialists across England, Wales, Scotland and Northern Ireland. Every programme ends with a 10-year insurance-backed guarantee that transfers with the property.
Removal methods and prices
Herbicide treatment programme
From £1,500
Typical duration: 3–5 years
- Lowest cost route to eradication
- Minimal disruption to gardens and hard landscaping
- Stem injection and foliar spray by qualified operatives
- 10-year insurance-backed guarantee on completion
Hybrid excavation
From £4,000
Typical duration: 2–8 weeks
- Partial dig with on-site rhizome screening
- Follow-up herbicide on residual growth
- Suits gardens needing quick usable space
- Far cheaper than full off-site disposal
Full excavation & removal
From £8,000
Typical duration: 1–4 weeks
- Complete rhizome removal to depth
- Licensed carrier disposal with waste transfer notes
- Immediate site clearance for development
- Validation sampling and sign-off report
Not sure which applies? Compare them in detail in excavation vs herbicide, or see the full cost guide. We also publish a buyer's guide to choosing a knotweed removal company.
Commercial and development sites
Knotweed on a development site is a programme risk, not a gardening problem. We deliver commercial removal for housebuilders, main contractors, local authorities and infrastructure owners — with CDM-compliant method statements, waste transfer documentation, validation sampling and sign-off reports suitable for planning discharge and lender due diligence.
How removal works
Free photo survey
Upload photographs through our online survey and get species confirmation the same day.
Site assessment
A PCA-qualified surveyor attends within 48 hours, maps the stand and records depth and spread.
Management plan
You receive a written, mortgage-compliant Japanese Knotweed Management Plan with a fixed price.
Treatment & monitoring
Works are carried out to plan, with monitoring visits and full documentation at every stage.
Guarantee issued
On completion we issue a 10-year insurance-backed guarantee that transfers to future owners.
10-year insurance-backed guarantee
Underwritten independently and transferable to the next owner — the paperwork mortgage lenders ask for. Free survey, same-day quote, £10 million public liability cover.