Japanese knotweed
What did the visit record about a herbicide sticker, about the fence, and about a treatment programme the sticker does not prove was finished?
The visit recorded a herbicide sticker and its place by the fence. It did not record a finished treatment programme, because a sticker does not prove the work was completed. The survey has noted what was visible. It has not decided that Japanese knotweed is absent, present or under a managed plan. A label can be left after one visit or after many. The home survey did not dig the border and did not check a contractor's papers. The programme, if there is one, stays unproved.
Last reviewed 24 October 2026. Written for buyers in England and Wales unless this answer says otherwise. No named surveyor has signed this page. It is general guidance, not a report on your house, and not legal advice.
What is the fuller explanation?
Treatment of knotweed is a sequence of visits, not a sticker on a post. The fence is a common place for growth to cross a boundary, and a label only shows that someone fixed a label there. The surveyor can describe stems, crowns, disturbed soil or the lack of growth that was visible, within the season and the access. None of that rebuilds a contractor's diary. A management plan is dates, areas and a guarantee. The sticker is not that plan.
Ask the solicitor for any management plan, guarantee and neighbour letters, and set them beside the fence the survey named. Do not treat the sticker as the plan. A lender may ask a direct question about knotweed. This visit has not answered it. If the ground needs a specialist, instruct someone who deals with the plant and keep that report apart from a label seen on the day.
What should you ask your surveyor?
- Where was the sticker, and what did it actually say?
- What growth, if any, was visible along the fence?
- Does the report avoid saying a treatment programme is finished?
What are the typical next steps?
- Treat the sticker as a label, not a finished programme.
- Ask the solicitor for any plan and guarantee.
- Instruct a plant specialist if the ground still needs one.
Costs vary with the building and with who you instruct. Where this page does not cite a published figure, ask the surveyor, a relevant specialist, or your solicitor for a written quote. Do not treat a forum average as the price.
Also asked about this
Does a bare fence in winter clear the garden?
A bare fence shows that season's view, not the whole year. Growth can die back and return later. The survey did not dig and did not clear the garden because a sticker was there. Any assurance needs papers or a proper inspection, not a quiet border on one day.
Can a neighbour's treatment bind this plot?
A sticker on a fence does not show which plot was treated or whether access was agreed. The survey did not read a neighbour's contract. Your solicitor can ask whose land was included. Until those papers exist, the programme on this side of the fence is something the sticker does not prove.