The Invasive Non-Native Specialists Association (INNSA) is the industry body for companies involved in controlling and eradicating invasive non-native species in the UK.

    INNSA aims to improve standards within the industry and offer peace of mind to clients.

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    INNSA members are committed to providing the highest possible level of service to both commercial and domestic customers.

    Whatever your requirement, whether it’s to do with Japanese Knotweed, Giant Hogweed, Himalayan Balsam or any other invasive non-native species we have a member who will be able to help.

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    INNSA is a membership organisation, and we welcome new members from within the invasive species removal industry, as well as consultants and suppliers to the trade.

    Review our protocol and complete the online application form now or request further information from info@innsa.org

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Lanark Way, Belfast

Site survey and treatment plan for Japanese Knotweed infestation on development plot

Japanese Knotweed Solutions were appointed to undertake a full site survey to assess the extent of the Japanese Knotweed infestation. Digital surveying equipment was used to locate the areas of contamination and a full pack of recommendations were produced for the Client.

The site was to be developed for Commercial use so it was imperative that the Japanese Knotweed was dealt with in the correct manner. Our recommendations were followed and works commenced which comprised of the following.

An initial spray was undertaken using a glyphosate spray ensuring areas were fenced off and foot washes were installed to prevent further spread.

After the initial spray the methodology involved burying contaminated material in a Borrow Pit under an area earmarked for use as a car park and soft landscaping within the site boundary. The sealed cell was buried and the pit backfilled allowing the development to continue.

Vertical root barriers were installed on the site boundary as the roots had migrated under adjacent land thus preventing re-infestation.

The project was completed in two weeks and our Client was able to continue with the development having incurred no off site costs for the Japanese Knotweed. to complete.


Japanese Knotweed Solutions Ltd (JKSL)

For more information on this project, please contact, Suzanne Hardy


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