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Knotweed excavation in Northwich

Removing the stand and its rhizome in a matter of days.

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Free photo ID check · Mon–Fri 8am–6pm, Sat mornings

What this job actually involves

Knotweed excavation — how it works here

Knotweed excavation in Northwich

Digging out takes the stand and rhizome away in days, which is why people choose it ahead of an extension, on a development plot or when a completion date is close. It costs more than spraying because of the soil volume and licensed disposal. On a bigger site, treating or burying soil on the spot can bring the cost down.

What happens on the day of a knotweed excavation

Preparing and setting out the site

Before any digging starts, the working area is marked out well beyond the visible canes, because rhizome can run sideways. Access for a small digger or a barrow route is checked, and anything fragile is protected. Services such as drains, cables and pipes are looked for first. Plans for the soil are agreed in advance: whether it is screened and buried on site below a barrier, or loaded for removal by a licensed carrier. Tell us about parking, narrow side passages and overhanging trees beforehand.

The dig itself and what is left behind

Soil is taken out in layers, with the contaminated material kept apart from clean soil, and loaded without being spread across the garden. Vehicles and tools are cleaned before leaving the area so fragments are not carried away. The hole is then checked for remaining rhizome, backfilled with clean material and often finished with a membrane. Expect a messy few days. Lawns, borders and paving in the working strip may need to be replaced afterwards, so ask what is included in the quote.

Waste, paperwork and after-care

Knotweed soil is controlled waste, so it needs a proper transfer note and a disposal site that accepts it. You should receive copies of these records, and they are what a buyer's solicitor will ask for. Do not reuse the soil as topsoil elsewhere. In the following season, watch the dug area for any shoots and report them early. Some firms offer a guarantee, but the terms differ, so read what it covers and for how long. Ground near old works may need extra checks.

On the ground

What this looks like around Northwich

Dense canes on a canal or river bank, with stone and brick edging behind.
Dense canes on a canal or river bank, with stone and brick edging behind.
Spring shoots forcing their way through a block-paved drive.
Spring shoots forcing their way through a block-paved drive.
Spraying a stand once it is in full summer leaf.
Spraying a stand once it is in full summer leaf.
Step by step

How knotweed excavation works with us

  1. Send us a picture.

    A leaf and a length of stem, through the form or by message. Free.

  2. We come and survey.

    For a confirmed knotweed stand, we visit, measure it and record what sits nearby.

  3. Choose the route.

    Spraying across a few seasons, or digging it out when the date matters.

  4. Paperwork and return visits.

    A written plan for your files and your lender, plus follow-ups until regrowth stops.

What it costs

Clear pricing for knotweed excavation in Northwich

Every job starts with a free photo check. If a visit is needed, you get a written quote before any work starts — no obligation, no surprises.

See full price guide →

Survey from
£275
  • Free identification from a photo
  • Written quote before work starts
  • Report suitable for lenders and buyers
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Before you ring

Questions about knotweed excavation

Is the entire garden dug?
No. Only the area shown on the survey, with a margin added for safety.
How do I know if it is Japanese knotweed?
Start with the stems. They are hollow, rather like bamboo, flecked with purple and kink at every joint. The leaves are shield-shaped with a flat edge where the stalk joins. In late summer there are creamy flower sprays, and in winter the dead canes stay up, brown and brittle. The quickest route is to send us a photo.
Is it illegal to have knotweed in my garden?
No, simply having it is not against the law. Allowing it to spread into the wild is an offence, and anything you cut or dig counts as controlled waste. If it passes onto a neighbour's land, a claim against you is possible.
Will knotweed stop me getting a mortgage?
It does not automatically rule you out. Lenders commonly proceed once there is a professional survey, a management plan and an insurance-backed guarantee that can pass to a buyer.
How long does treatment take?
A spraying programme normally runs for three to five growing seasons, with checks afterwards. Excavation is done in days, though it comes at a higher price.
Can I just dig it out myself?
We would not advise it. Small pieces of rhizome are enough to regrow, and the soil cannot simply go in a skip or the garden waste bin.
Where we do it

Knotweed excavation across Northwich

Northwich town centre· Hartford· Davenham· Barnton· Winnington· Greenbank· Leftwich· Castle· Wincham and Lostock Gralam· Weaverham and Rudheath

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Also available

Other services

Knotweed survey We visit, confirm the plant, measure it and write up what we find. Free knotweed ID from a photo Send a picture and we say what it is. No charge. Knotweed plan for mortgages and sales The management plan lenders and buyers' solicitors ask to see. Knotweed from a neighbour A dated record of where the stand is and which way it is heading. Knotweed spraying programme Herbicide applied through the growing season, over several years. Knotweed root barrier Heavy-duty membrane set upright to keep rhizome on its own side. Knotweed on development land Surveys and removal for Northwich building sites. Knotweed for landlords Surveys and treatment for rented houses and flats.
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