Swansea & Gower invasive plant guide
SwanseaWeed Control

How we work in Sandfields, SA1 & St Thomas

  • Free initial quote from your photos to help confirm it is montbretia
  • 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

Dockland fill, disused sidings and dune fringe. Knotweed on cleared development plots, rugosa rose spreading into Crymlyn Burrows.

Pressure from invasive plants here: High. Montbretia is less common here than elsewhere, so we check identification carefully.

Legal status: Schedule 9, Wildlife and Countryside Act 1981.

Map of Sandfields, SA1 & St Thomas

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Pins show places we cover and publicly reported records, not individual properties.

Landmarks and area facts

  • Sandfields

    Part of the City and County of Swansea, served by Swansea Council for waste, roads and public land.

  • Maritime Quarter

    Built around the former South Dock, which closed to commercial shipping in 1969.

  • SA1 Waterfront

    Part of the City and County of Swansea, served by Swansea Council for waste, roads and public land.

  • St Thomas

    Part of the City and County of Swansea, served by Swansea Council for waste, roads and public land.

  • Port Tennant

    Part of the City and County of Swansea, served by Swansea Council for waste, roads and public land.

  • Kilvey Hill

    Rises to about 193 metres above the east side of Swansea.

Places we cover

Local news & advice

Advice article

Montbretia in Swansea: When to Act and Why

Learn when to tackle invasive montbretia in Swansea and Gower, why its underground corms matter, and how to protect nearby plants during careful control work.

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.

Other services in Sandfields, SA1 & St Thomas

Sandfields, SA1 & St Thomas area guide