Japanese Knotweed Removal in North Wales
County-wide surveys, herbicide programmes and full excavation for homeowners, landlords, developers and public bodies across North Wales. 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 North Wales 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 North Wales
The Dee, Conwy and Clwyd valleys and the North Wales coast railway give knotweed continuous corridors through the region, and former slate and quarry land inland provides exactly the disturbed ground the plant colonises fastest.
Main local pressure: Dee and Conwy valleys, coast railway and former quarry land.
North Wales knotweed coverage map
Our surveyors work across the whole of North Wales. The map below shows the county we cover for Japanese knotweed surveys, herbicide programmes and excavation, where the main local pressure is dee and conwy valleys, coast railway and former quarry land.
Towns and surrounding villages
Every location marked on the North Wales map is served directly, including Wrexham, Bangor, Llandudno, Rhyl, Colwyn Bay, Mold, Caernarfon and Prestatyn — plus the villages, hamlets and rural parishes between them.
Towns and villages we cover in North Wales
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 Wrexham
LL11, LL12, LL13 · Rhosllanerchrugog, Gresford, Marford, Bangor-on-Dee
Japanese knotweed removal in Bangor
LL57 · Menai Bridge, Llandegfan, Tregarth, Llanfairfechan
Japanese knotweed removal in Llandudno
LL30 · Deganwy, Craig-y-Don, Penrhyn Bay, Glan Conwy
Japanese knotweed removal in Rhyl
LL18 · Prestatyn, Rhuddlan, Bodelwyddan, Kinmel Bay
Japanese knotweed removal in Colwyn Bay
LL29 · Old Colwyn, Rhos-on-Sea, Mochdre, Glan Conwy
Japanese knotweed removal in Mold
CH7 · Buckley, Northop, Gwernaffield, Nercwys
Japanese knotweed removal in Caernarfon
LL55 · Bontnewydd, Y Felinheli, Llanrug, Waunfawr
Japanese knotweed removal in Prestatyn
LL19 · Meliden, Dyserth, Gronant, Trelawnyd
Japanese knotweed removal in Bangor
LL57 · Menai Bridge, Upper Bangor, Hirael, Tregarth
Japanese knotweed removal in Pwllheli
LL53 · Llanbedrog, Abersoch, Nefyn, Efailnewydd
Japanese knotweed removal in Porthmadog
LL49 · Tremadog, Borth-y-Gest, Penrhyndeudraeth, Minffordd
Japanese knotweed removal in Dolgellau
LL40 · Llanelltyd, Brithdir, Arthog, Fairbourne
Japanese knotweed removal in Bala
LL23 · Llanuwchllyn, Llandderfel, Sarnau, Llangower
Japanese knotweed removal in Flint
CH6 · Bagillt, Holywell, Northop, Oakenholt
Japanese knotweed removal in Holywell
CH8 · Greenfield, Bagillt, Carmel, Whitford
Japanese knotweed removal in Denbigh
LL16 · Henllan, Trefnant, Llandyrnog, Bodfari
Japanese knotweed removal in Ruthin
LL15 · Llanbedr, Llanfair Dyffryn Clwyd, Pwllglas, Gellifor
Japanese knotweed removal in Conwy
LL32 · Deganwy, Llandudno Junction, Glan Conwy, Rowen
Japanese knotweed removal in Abergele
LL22 · Pensarn, Belgrano, Llanddulas, St George
Japanese knotweed removal in Holyhead
LL65 · Trearddur Bay, Valley, Llanfachraeth, Four Mile Bridge
Japanese knotweed removal in Llangefni
LL77 · Pentraeth, Gwalchmai, Bodffordd, Rhosmeirch
Typical North Wales 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 North Wales
Knotweed is rarely the only problem on a North Wales plot. The same crews treat running bamboo in North Wales gardens, giant hogweed on North Wales watercourses and Himalayan balsam along North Wales riverbanks. If you are mid-sale, start with what mortgage lenders require for knotweed and our property survey reports.
Species we treat in North Wales
- Japanese knotweed removal in North Wales — identification, treatment and excavation
- running bamboo removal in North Wales — rhizome excavation and root barriers
- giant hogweed removal in North Wales — safe removal of a burn-causing species
- Himalayan balsam removal in North Wales — riverbank and site-wide clearance
- horsetail (marestail) removal in North Wales — long-term control programmes
- unidentified weeds removal in North Wales — photo guide to every species we treat
Buying, selling or letting in North Wales
- mortgage lender requirements for North Wales property — RICS categories and the paperwork valuers ask for
- insurance claims for North Wales property — policy exclusions and the evidence insurers want
- encroachment and legal advice for North Wales property — nuisance claims and owner obligations
- insurance-backed guarantees for North Wales property — 10-year cover that transfers on sale
- removal costs for North Wales property — survey, treatment and excavation pricing
- excavation vs herbicide for North Wales property — choosing a method for your timescale
Who we work for in North Wales
Counties bordering North Wales
Japanese knotweed removal in Merseyside
Liverpool, St Helens, Southport, Birkenhead
Japanese knotweed removal in Cheshire
Chester, Warrington, Crewe, Macclesfield
Japanese knotweed removal in Greater Manchester
Manchester, Salford, Stockport, Bolton
Japanese knotweed removal in Lancashire
Preston, Blackburn, Blackpool, Burnley
Other counties we cover
Free photo identification in North Wales
Same-day species confirmation from your photographs. On-site professional surveys from £250.