Stop the Spread With Our Thorough, Insurance-backed Removal Service.

Our specialists work with 5 & 10 year insurance-backed guarantees and a range of treatments, so you can get rid of Japanese knotweed for good.

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As the most aggressive, destructive and invasive plant in the UK, Japanese knotweed is a blight for homeowners, developers and commercial property owners alike. Eradication and removal is the only guaranteed way to ensure it doesn’t return.


Expert Removal of Japanese Knotweed

Our highly skilled, trained and accredited Japanese knotweed removal experts begin with a survey to understand the extent of the infestation. Once we know the area to work with, we can advise on the best approach, whether that be treatment in the form of herbicide or stem injections, all the way through to a full site excavation and incineration.

Japanese Knotweed Specialists offer:

  • Removal on sites from 1m2 to over 1000m2
  • Both commercial and residential removal performed by accredited experts
  • Surveys, both dog and human, to understand the extent of the problem
  • Sifting and screening for rhizomes
  • On-site burial or relocation with herbicide treatments
  • Off-site removal with accredited waste licences
  • Insurance-backed guarantees between five and 35 years

Hiring an expert with insurance-backed guarantees is the only way to ensure thorough, long-lasting and complete eradication of Japanese knotweed that won’t pose problems in the future.

Japanese Knotweed Burning

Specialist Japanese knotweed experts can carry out burning as a way to remove Japanese knotweed. Due to the invasive nature of knotweed, burning must be done in a professional manner to ensure all fragments are cleared and do not spread.

Burning is only effective when the knotweed is fully dried and must be done in a closed incinerator to stop fragments. Japanese Knotweed Specialists are able to carry out this work with expert equipment and ensure that knotweed does not return afterwards.

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Burning Knotweed
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Excavation Of Soil
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Sifting and Screening

Sifting and Screening

By using plant machinery, our team can quickly sift and screen topsoil for knotweed fragments. Depending on the size of site, screening can take up to two days, but once the screening is complete, the site is cleared for immediate development.

Sifting and screening uses a variety of plant machinery which works through the topsoil quickly, clearing up to 40 tons of soil per hour.

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Excavation of Knotweed

Excavation of knotweed happens in one of two ways:

  • Excavation and on-site burial or treatment
  • Excavation and off-site removal

Depending on the size of your site, a different excavation method may be needed. Excavation and on-site treatment or burial requires a large site with extensive spare space to fulfil land requirements. Some sites cannot be used for burial, and as such, a knotweed surveyor will be able to identify the best course of action.

For offsite excavation and removal, a licensed waste carrier such as Japanese Knotweed Specialists must be used, as knotweed is a controlled substance.

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Excavation Of Soil
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Herbicide Spraying

Herbicide Spraying Treatment

At Japanese Knotweed Specialists, we can also use leaf application of herbicide to treat knotweed infestations. Herbicides can be used in conjunction with removal methods such as excavation to ensure a complete eradication of knotweed.

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Stem Injection Treatment

Rather than spraying the herbicide, stem injection involves injecting concentrated glyphosate into each stem of knotweed, causing direct death stem by stem. Unlike with spraying, glyphosate stem injection does not damage any other plants in the nearby vicinity, and is preferred on sites of ecological interest.

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Steam Injection
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Stem Injection
Root Barriers
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Root Barriers

Root Barriers

The membrane of a root barrier stops any knotweed from growing into the surrounding soil. For burial, the root membrane will be wrapped around the soil in question to completely encase and prevent any knotweed from growing. Root membranes can also be placed around a living plant to prevent the spread of the plant.

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Why Is It Important to Remove Japanese Knotweed?

Japanese knotweed can regrow with only a thumb nail’s worth (around 0.2g) of rhizome (the root system) left. Therefore, while a herbicide treatment can be effective in certain scenarios, in order to guarantee, removal is the only way to completely eradicate it.

Japanese Knotweed Specialists offer a variety of removal services, included blended approaches, where we both excavate and apply an herbicide treatment.

What Are the Long-Term Dangers of Japanese Knotweed?

While there are no impacts to human health, the damage to buildings, gardens and neighbouring land is vast, thanks to Japanese knotweed’s ability to spread up to 10cm a day in growing season. This invasive species will grow through concrete, tarmac and even building foundations.

It is also illegal to let knotweed knowingly spread, and you could be fined or land a jail sentence in severe cases.

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Why Choose Japanese Knotweed Specialists?

As a market-leading company, our work is accredited by the Property Care Association and the Royal Institute of Chartered Surveyors, as well as recognised by mortgage lenders. We work across the country and work with everyone from government agencies to private homeowners.

Insurance-Backed Guaranteed Japanese Knotweed Removal

Japanese Knotweed Specialists were the first company to offer 35-year guarantees that will last the length of your mortgage. This protects any future buyers of your home, as the guarantee covers the land, and we’ll remove any knotweed that reappears at our cost, not yours.

Japanese Knotweed Removal Aftercare

Once our team have completed the removal of the knotweed, we won’t leave you to deal with any future occurrences or issues that arise. We offer a holistic removal service, where we work with you to monitor the site post-treatment.

Management Plans for Removing Japanese Knotweed

Japanese knotweed takes up to three years to fully remove, depending on the approach that is undertaken. Therefore, we provide clear management plans with timescales, proposals and what we will do at each stage, as well as a map detailing the extent and risk of knotweed on the property and surrounding land. We can offer these for residential or commercial properties, regardless of the scope of the project.

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PCA Accreditation and Membership

Japanese Knotweed Specialists are not only accredited by the PCA but are members of their ‘Invasive Weed Control Group’ (IWG) which ensures you receive industry-leading solutions completed to a high standard and all from an audited contractor.

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Working with Japanese Knotweed Specialists

We work across multiple sectors, both private and public, to offer our expert services, from consultancy to removal.

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Our teams will work considerately in your home and garden to ensure our removal service is not only thorough, but protects the habitats you may have also. You can also rest in the knowledge that we have trained our removal staff to work around pipes, such as gas or plumbing, ensuring your day-to-day life isn’t affected.

Residential Services


When preparing to develop a site, carrying out a survey and removal is best done before any construction starts. With our ability to carry out dog surveys, we can find knotweed all year round, and begin removal reactively to ensure your project isn’t delayed and can continue, backed by our guarantees.

Commercial Services
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Our Bespoke Live Reporting System

Our parent company, Grounds Care Group, uses a bespoke live reporting software called iView, developed over 12 years, and as a Japanese Knotweed Specialist customer, you will have access to iView. This gives you insight and scheduling reports, as well as access to receipts, quotes and documentation at the click of a button. Here, you can see the progress of your Japanese knotweed removal, all from your computer or phone.

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Speak to one of our expert Japanese knotweed specialists today on 0800 122 3326.

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