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.
Towns we cover in Cornwall
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.
Other counties we cover
Free photo identification in Cornwall
Same-day species confirmation from your photographs. On-site professional surveys from £250.