Report
Report a sighting properly the first time
Reports get acted on when they name the plant, pin the location and show photographs. This builds that text for you — nothing is sent from this page.
Your report
Invasive plant sighting report Plant: (not identified yet) Area: (area) Street / location: (street, nearest house number or landmark) Approximate size of stand: (e.g. 3m along a lane wall) Date seen: 10/10/2026 Further detail: (what the plant is growing out of, whether it is on a wall, verge, bank or garden, and whether anyone has cut it) Photographs attached: whole stand, close-up of stems, close-up of leaves, wider shot showing the street. I have not cut, dug or strimmed the plant.
Who to send it to
- Streets, back lanes, parks and council land: Swansea Council. They run a Japanese knotweed service and publish guidance on responsibilities for freehold, leasehold and tenanted homes.
- Riverbanks and anything near water: Natural Resources Wales, as well as the council.
- Railway embankments: Network Rail.
- Private gardens and industrial estates: the occupier or managing agent, in writing, keeping a dated copy.
- Records for conservation: submit sightings to the local environmental records centre so the distribution data improves.
Photograph, do not touch
Never handle giant hogweed, and never cut or dig knotweed before it is reported and a plan is in place.