Free Japanese knotweed identification

Worried about Japanese knotweed? Upload an image or video and our specialists will be able to confirm it for free. We’ve spent more than 20+ years dealing with invasive weeds across the UK and Ireland, and every submission is reviewed by a PCA CSJK‑accredited invasive‑weed surveyor.

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Fill out our form for free Japanese knotweed identification

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    How do we identify Japanese knotweed?

    Our experts manually assess every submission

    Each photo is assessed by our experts here at Eco Control Solutions. We check seasonal features, stem structure, leaf pattern and site conditions, to confirm whether knotweed is present.

    Key characteristics of Japanese knotweed

    • Reddish shoots in spring
    • Hollow stems with purple flecks
    • Zig-zag leaf arrangement
    • Creamy-white flowers in late summer
    Get your free Japanese knotweed identification
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    Working across the UK & Ireland

    Wherever you’re based, our team is equipped to support residential and commercial projects of all scales. From site surveys to guaranteed eradication plans, we offer a reliable and cost-effective service you can trust.

    Birmingham

    Belfast

    Cardiff

    Dublin

    Edinburgh

    Inverness

    London

    Manchester

    Nottingham

    Norwich

    Taunton

    Wakefield

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    Frequently asked questions

    Yes. Our identification service is offered at no cost and with no obligation. It is designed to give homeowners, developers and property professionals a reliable first assessment of suspected Japanese knotweed. 

    Every submission is reviewed by a PCA CSJK‑accredited invasive‑weed surveyor at Eco Control Solutions. All evidence is assessed manually, using verified indicators and over 20+ years of professional field experience.

    Yes. If you prefer to discuss your concern before submitting a photo, you can contact our team on 0330 363 9555 or email info@ecocontrol.co.uk. We will provide clear, honest guidance at every step.

    Yes. We regularly assess and treat a range of invasive species including Giant Hogweed, Himalayan Balsam, Horsetail (Mare’s Tail), Ragwort and Bamboo to name a few.

    Eco Control Solutions operates across the UK and Ireland, with local teams in key regions including London, Cardiff, Wakefield, Edinburgh, Manchester, Norwich, and more.

    Our support hub

    Explore our Support Hub for expert articles, practical blogs, real case studies and the latest updates on Japanese knotweed and invasive plant management.

    Sections include:
    Advice
    Blogs
    Case studies
    FAQs

    Book a site survey

    Fast. Professional. Nationwide.

    If you’ve discovered Japanese knotweed on your property, our team will assess the site and recommend a cost-effective eradication plan. All services are backed by a 10-year warranty as standard.

    Get your site surveyed by the experts

    Fast. Professional. Nationwide.
    Got Japanese knotweed? We’ll assess your site and recommend the most cost-effective eradication plan, backed by a 10-year warranty and optional Insurance-Backed Guarantee
    Get your site survey

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