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Japanese Knotweed Treatment in Dover
Herbicide treatment is the most common and cost-effective way to deal with Japanese knotweed. A specialist applies professional treatment over several growing seasons and backs it with a guarantee, controlling the plant without the cost and disruption of a full dig-out.
What the service includes
- A treatment plan based on the survey findings
- Professional herbicide application over multiple seasons
- Follow-up monitoring visits to confirm control
- An insurance-backed guarantee (typically 5–10 years)
- Documentation for your lender, buyer or solicitor
Why the guarantee is the key
For selling or remortgaging, the guarantee matters as much as the treatment itself. An insurance-backed guarantee means that if the knotweed returns within the covered period, the remediation is funded — and that is precisely the reassurance a lender needs to proceed. A treatment plan without a recognised guarantee often will not satisfy them.
When treatment is the right choice
- You are staying in the property, or have time before a sale
- The knotweed is not immediately obstructing building work
- You want the lower-cost route and can accept a multi-season programme
If you need the knotweed gone quickly — for a fast sale or development — excavation and removal may be the better fit, and the specialist can quote for both so you can compare.
Local knowledge
East Kent's mild coastal climate gives knotweed a long growing season, so timing the treatment across the year matters. A local specialist plans applications around the plant's growth cycle rather than treating reactively.
Frequently asked questions
How long does treatment take?
A herbicide programme usually runs across two to three or more growing seasons to fully control the plant, with follow-up monitoring. The insurance-backed guarantee covers you during and after that period, which is what reassures lenders.
Is treatment enough for my mortgage?
For most lenders, yes — a professional treatment plan with an insurance-backed guarantee is normally accepted. If you need a faster, permanent result, excavation may suit better. The survey will advise.
Related services
Knotweed Survey & Management Plan
Identification, extent survey and a written management plan lenders will accept.
Knotweed Excavation & Removal
Full dig-out for a fast, permanent solution when you are selling or developing.