Japanese Knotweed Removal in Northern Ireland
County-wide surveys, herbicide programmes and full excavation for homeowners, landlords, developers and public bodies across Northern Ireland. 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 Northern Ireland 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 Northern Ireland
The Lagan, Bann and Foyle river systems and Belfast's former shipyard and linen-mill land give Northern Ireland a heavy knotweed and balsam burden. Riverbank stands and brownfield redevelopment around Belfast and Derry drive most of the surveys we carry out here.
Main local pressure: River corridors, former mill land and brownfield regeneration.
Northern Ireland knotweed coverage map
Our surveyors work across the whole of Northern Ireland. The map below shows the county we cover for Japanese knotweed surveys, herbicide programmes and excavation, where the main local pressure is river corridors, former mill land and brownfield regeneration.
Towns and villages we cover in Northern Ireland
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 Belfast
BT1, BT7, BT9 · Holywood, Dundonald, Newtownabbey, Dunmurry
Japanese knotweed removal in Lisburn
BT27, BT28 · Hillsborough, Moira, Dromore, Lambeg
Japanese knotweed removal in Newry
BT34, BT35 · Warrenpoint, Bessbrook, Camlough, Mayobridge
Japanese knotweed removal in Derry
BT47, BT48 · Culmore, Eglinton, Newbuildings, Strathfoyle
Japanese knotweed removal in Armagh
BT60, BT61 · Richhill, Markethill, Loughgall, Keady
Japanese knotweed removal in Craigavon
BT62, BT63, BT66 · Portadown, Lurgan, Waringstown, Aghagallon
Japanese knotweed removal in Bangor
BT19, BT20 · Groomsport, Crawfordsburn, Conlig, Helen's Bay
Japanese knotweed removal in Newtownards
BT22, BT23 · Comber, Greyabbey, Kircubbin, Ballywalter
Japanese knotweed removal in Ballymena
BT42, BT43 · Ahoghill, Cullybackey, Broughshane, Kells
Japanese knotweed removal in Antrim
BT41 · Randalstown, Templepatrick, Toome, Crumlin
Japanese knotweed removal in Coleraine
BT51, BT52 · Portstewart, Portrush, Castlerock, Macosquin
Japanese knotweed removal in Omagh
BT78, BT79 · Fintona, Dromore, Beragh, Gortin
Japanese knotweed removal in Enniskillen
BT74 · Lisnaskea, Irvinestown, Ballinamallard, Derrygonnelly
Japanese knotweed removal in Dungannon
BT70, BT71 · Coalisland, Moy, Donaghmore, Castlecaulfield
Japanese knotweed removal in Cookstown
BT80 · Moneymore, Stewartstown, Pomeroy, Coagh
Japanese knotweed removal in Magherafelt
BT45 · Maghera, Castledawson, Bellaghy, Tobermore
Japanese knotweed removal in Larne
BT40 · Glenarm, Ballygally, Islandmagee, Magheramorne
Japanese knotweed removal in Carrickfergus
BT38 · Greenisland, Whitehead, Eden, Kilroot
Japanese knotweed removal in Downpatrick
BT30 · Ardglass, Killough, Strangford, Ballynahinch
Japanese knotweed removal in Newcastle
BT33 · Dundrum, Castlewellan, Annsborough, Maghera
Japanese knotweed removal in Banbridge
BT32 · Gilford, Loughbrickland, Scarva, Rathfriland
Japanese knotweed removal in Strabane
BT82 · Sion Mills, Artigarvan, Ballymagorry, Victoria Bridge
Typical Northern Ireland 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 Northern Ireland
Knotweed is rarely the only problem on a Northern Ireland plot. The same crews treat running bamboo in Northern Ireland gardens, giant hogweed on Northern Ireland watercourses and Himalayan balsam along Northern Ireland riverbanks. If you are mid-sale, start with what mortgage lenders require for knotweed and our property survey reports.
Species we treat in Northern Ireland
- Japanese knotweed removal in Northern Ireland — identification, treatment and excavation
- running bamboo removal in Northern Ireland — rhizome excavation and root barriers
- giant hogweed removal in Northern Ireland — safe removal of a burn-causing species
- Himalayan balsam removal in Northern Ireland — riverbank and site-wide clearance
- horsetail (marestail) removal in Northern Ireland — long-term control programmes
- unidentified weeds removal in Northern Ireland — photo guide to every species we treat
Buying, selling or letting in Northern Ireland
- mortgage lender requirements for Northern Ireland property — RICS categories and the paperwork valuers ask for
- insurance claims for Northern Ireland property — policy exclusions and the evidence insurers want
- encroachment and legal advice for Northern Ireland property — nuisance claims and owner obligations
- insurance-backed guarantees for Northern Ireland property — 10-year cover that transfers on sale
- removal costs for Northern Ireland property — survey, treatment and excavation pricing
- excavation vs herbicide for Northern Ireland property — choosing a method for your timescale
Who we work for in Northern Ireland
Counties bordering Northern Ireland
Japanese knotweed removal in Donegal, Cavan & Monaghan
Letterkenny, Donegal, Cavan, Monaghan
Japanese knotweed removal in Leinster
Dublin, Bray, Drogheda, Dundalk
Japanese knotweed removal in Connacht
Galway, Sligo, Castlebar, Westport
Japanese knotweed removal in North Wales
Wrexham, Bangor, Llandudno, Rhyl
Other counties we cover
Free photo identification in Northern Ireland
Same-day species confirmation from your photographs. On-site professional surveys from £250.