Landfill Site Japanese Knotweed Treatment

Landfill Site Japanese Knotweed Treatment

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Japanese knotweed treatment on commercial site

Japanese Knotweed Ltd was asked to assess a closed landfill site that had a large infestation of Japanese knotweed.

Whilst the landfill site is closed, it is in the interest of the property owner to control and manage Japanese knotweed on their land. Should the Japanese knotweed be allowed to spread and encroach onto neighbouring properties, a claim of private nuisance could be made.

Japanese Knotweed Survey

As the site covered such a large area, our Certificated Surveyor in Japanese Knotweed (CSJK) allowed a full day to survey the site.

The survey was carried out during the winter. At this time of year, knotweed appears as dead canes and could be overlooked as dead plant matter. However, our expert CSJK operative was able to easily identify all the knotweed on site.

The total area of Japanese knotweed was measured at 17,926m2. All the Japanese knotweed was very mature, with three of the large stands located on steep slopes.

The survey included an assessment for works access, the remote location of the site as well as ground condition. Our surveyor found it to be undulating and uneven underfoot, possessing steeps slopes with some leading down to a river.

Invasive Species Survey
Image 1: Dead Knotweed Canes Identified During the Survey

Japanese Knotweed Treatment

Due to the size and remote nature of the site, two people always attend to chemically treat the knotweed. Our carefully managed visits correctly use a chemical over a sustained period of time which will exhaust the plant and prevent the spread of knotweed.

Our herbicide Knotweed Management Plan (KMP) is designed to cause maximum damage to the plant and achieve effective control. Suitable herbicides applied correctly can damage the underground knotweed crown and rhizome significantly enough to eventually prevent above-ground stem re-growth.

Using a knapsack sprayer and wearing appropriate PPE, our operatives methodically and carefully make their way around the site, using the original site plan to locate the stands of knotweed.

Service Visit Record (SVR)

Upon completion of the visit, the operatives detail their activity within a Service Visit Record (SVR), including photographs, showing the areas of knotweed and their current growth state. We keep this record on file for our information and it is also shared with our client.

The initial knotweed treatment visits onsite took a full three days. If the weather became inclement, they were forced to stop until the rain abated.

Treated Japanese knotweed on site
Image 3: Treated Japanese Knotweed Area On-Site

Herbicide Treatment Programmes

Our commercial herbicide Knotweed Management Plans are suitable for a variety of sites, from managed properties, commercial properties, or even disused landfill sites. We have a variety of treatment options and durations, with a Guarantee period from 2 to 10 years. Where guarantee periods of five or more years are taken out we can also provide Insurance on the Guarantee.

Trust in Japanese Knotweed Ltd, the UK’s Experts

We are the UK's trusted Japanese knotweed treatment and remediation company with a proven track record in working successfully for local authorities, developers, construction companies and private landowners. Our highly knowledgeable and skilled staff provide a comprehensive service and are committed to providing the highest level of customer care.

We provide Japanese Knotweed Surveys and Knotweed Management Plans, which include immediate excavation and/or long-term chemical treatment options with Insurance on the Guarantees. Our remedial methods are tailored to each site and provide sensible and efficient eradication solutions to meet all requirements.

Japanese Knotweed Ltd review

We are the UK’s largest dedicated Japanese knotweed and other invasive species treatment and removal company with PCA accreditation. We offer a range of services to both residential and commercial clients including:

If you suspect you have a Japanese knotweed problem, call us on 0333 2414 413 or email us at for your free survey.*

*Surveys on mainland England, Wales and Scotland are free, however if we find the property not to be affected by Japanese knotweed there is a charge of £165 +VAT and an accompanying findings Visual Assessment Report.

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