Japanese Knotweed Removal in Cornwall
County-wide surveys, herbicide programmes and full excavation for homeowners, landlords, developers and public bodies across Cornwall. Send photographs for free species confirmation; a professional on-site survey with a written report starts from £250 and is credited against the works if you proceed.
Fast site visits
Surveyors covering Cornwall and neighbouring counties.
10-year guarantee
Insurance-backed and transferable on sale.
£10m liability cover
Licensed carrier disposal on every excavation.
Why knotweed spreads in Cornwall
Former mining land across west Cornwall gave knotweed disturbed ground to colonise, and the mild maritime climate allows longer active growth than elsewhere in the UK. Remote sites make disposal distance a significant part of any excavation quotation here.
Main local pressure: Ex-mining land, mild maritime climate and long disposal runs.
Cornwall knotweed coverage map
Our surveyors work across the whole of Cornwall. The map below shows the county we cover for Japanese knotweed surveys, herbicide programmes and excavation, where the main local pressure is ex-mining land, mild maritime climate and long disposal runs.
Towns and villages we cover in Cornwall
Each town page has its own coverage map, local knotweed context and the villages and hamlets around it that our surveyors work in.
Japanese knotweed removal in Truro
TR1 · Threemilestone, Shortlanesend, Idless, Malpas
Japanese knotweed removal in Falmouth
TR11 · Penryn, Mylor Bridge, Flushing, Mabe Burnthouse
Japanese knotweed removal in Penzance
TR18 · Newlyn, Mousehole, Gulval, Heamoor
Japanese knotweed removal in St Austell
PL25 · Charlestown, Par, Carclaze, Trewoon
Japanese knotweed removal in Newquay
TR7, TR8 · Crantock, St Columb Minor, Quintrell Downs, Trevemper
Japanese knotweed removal in Bodmin
PL31 · Nanstallon, Lanivet, Cardinham, Withiel
Japanese knotweed removal in Camborne
TR14 · Pool, Illogan, Tuckingmill, Treswithian
Japanese knotweed removal in Redruth
TR15, TR16 · Carn Brea Village, Lanner, Four Lanes, Illogan
Typical Cornwall pricing
Herbicide programme
From £1,500
3–5 year treatment with monitoring and guarantee.
Hybrid excavation
From £4,000
Partial dig plus follow-up treatment.
Full excavation
From £8,000
Complete removal with licensed disposal.
Full breakdown in our cost guide, the excavation vs herbicide comparison and our contractor buyer’s guide.
Related invasive weed help for Cornwall
Knotweed is rarely the only problem on a Cornwall plot. The same crews treat running bamboo in Cornwall gardens, giant hogweed on Cornwall watercourses and Himalayan balsam along Cornwall riverbanks. If you are mid-sale, start with what mortgage lenders require for knotweed and our property survey reports.
Species we treat in Cornwall
- Japanese knotweed removal in Cornwall — identification, treatment and excavation
- running bamboo removal in Cornwall — rhizome excavation and root barriers
- giant hogweed removal in Cornwall — safe removal of a burn-causing species
- Himalayan balsam removal in Cornwall — riverbank and site-wide clearance
- horsetail (marestail) removal in Cornwall — long-term control programmes
- unidentified weeds removal in Cornwall — photo guide to every species we treat
Buying, selling or letting in Cornwall
- mortgage lender requirements for Cornwall property — RICS categories and the paperwork valuers ask for
- insurance claims for Cornwall property — policy exclusions and the evidence insurers want
- encroachment and legal advice for Cornwall property — nuisance claims and owner obligations
- insurance-backed guarantees for Cornwall property — 10-year cover that transfers on sale
- removal costs for Cornwall property — survey, treatment and excavation pricing
- excavation vs herbicide for Cornwall property — choosing a method for your timescale
Who we work for in Cornwall
Counties bordering Cornwall
Other counties we cover
Free photo identification in Cornwall
Same-day species confirmation from your photographs. On-site professional surveys from £250.