Pembrokeshire
New Zealand pygmyweed removal in Haverfordwest, Tenby & the Pembrokeshire Coast
A tiny aquarium plant that is one of Britain's most destructive pond invaders. A single fragment regrows into a new mat, and once established in a pond or ditch it is close to impossible to remove without draining.
How we work in Haverfordwest, Tenby & the Pembrokeshire Coast
- Free initial quote from your photos to help confirm it is new zealand pygmyweed
- Map the stand and its edges before work starts
- Contain roots, seed and soil so it can't spread
- Use the lightest method that works, with precise herbicide only where it is the safer option
- Return visits and written records until regrowth stops
Local picture
The Cleddau rivers carry balsam and knotweed through Haverfordwest, while the coast path and National Park grasslands face garden escapes like cotoneaster and montbretia. Covered by Pembrokeshire County Council; much of the coast is National Park land.
Pressure from invasive plants here: Moderate. New Zealand pygmyweed is less common here than elsewhere, so we check identification carefully.
Legal status: Schedule 9, Wildlife and Countryside Act 1981.
Map of Haverfordwest, Tenby & the Pembrokeshire Coast
Pins show places we cover and publicly reported records, not individual properties.
Landmarks and area facts
Haverfordwest
Founded by Flemish settlers around 1110 with a Norman castle, it became Pembrokeshire's county town in 1543.
Narberth
Narberth Castle, first mentioned in 1116, was rebuilt in stone in the thirteenth century by the Perrot family.
Tenby
The medieval town walls were begun by the Earls of Pembroke and strengthened after the Welsh sacked the town in 1260.
Saundersfoot
Parliament authorised the harbour and railway in 1829 to export anthracite coal.
Amroth
Coal was once shipped from this anthracite-mining beach to Bristol in the nineteenth century.
Kilgetty
The village sits in the Pembrokeshire anthracite coalfield, with coal mined locally since medieval times.
Places we cover
Local news & advice
Advice article
Spotting and Reporting Invasive Plants Around Angle
A practical guide to spotting invasive plants around Angle, Pembrokeshire, reporting concerns safely, and knowing when professional help is needed.
Advice article
Invasive Weeds: Pembrokeshire Coast and Swansea
Spot invasive weeds around Haverfordwest, Tenby, the Pembrokeshire Coast and Swansea, with practical identification tips and safe next steps for residents.
July 2025 · Swansea Bay News
Swansea, Neath and Llanelli named among Wales's worst knotweed hotspots
New figures from the national knotweed heatmap put Swansea city third in Wales with 936 verified sightings, Llanelli fourth with 693 and Neath sixth with 396. Wales as a whole records more than triple the knotweed density of England — which is why early reporting matters so much here.
Ongoing · Swansea Council
Swansea Council's knotweed treatment service is open for quotes
The council offers a paid treatment service for private land affected by Japanese knotweed, built on more than 20 years of treating its own land. Request a quote online and they aim to respond within 10 working days. Knotweed on council land should be reported to the nature team instead.
Ongoing · Swansea Council
Sign up for the council's knotweed email updates
Swansea Council runs a knotweed updates email list alongside its treatment FAQs — covering what to expect after spraying (die-back in about 14 days), safety around children, pets and ponds, and how repeat treatments over up to five years bring a stand under control.
September 2023 · Wales Online
North Hill case shows why knotweed between gardens needs early action
A Pleasant View Terrace homeowner spent over a year trying to get knotweed spreading from a neighbouring property contained. Knotweed crossing a boundary is a private legal matter — documenting it early and getting both owners into a treatment plan is far cheaper than a dispute.