Environet are market-leading
Japanese Knotweed Specialists

item Knotweed Identification
item Removal & Treatment
item Testimonials
Detection Dogs

Operating across the UK, Environet is a leading Japanese knotweed specialist who can help with the removal of this damaging, invasive weed. Our skilled team can assist you with the eradication and treatment of Japanese knotweed and other non-native invasive species on commercial and residential property.

With over twenty years of experience, our highly-trained team operate across the UK to manage and remove Japanese knotweed from commercial and residential property and land. We work swiftly and efficiently to tackle the problem and to prevent any costly damage. Furthermore, all our work is offered with a 10 year insurance backed guarantee underwritten by an ‘A’ rated syndicate at Lloyds for your complete peace of mind.

Prevent costly damage to your property and unpleasant legal battles by calling the Japanese knotweed specialists at Environet as soon as you detect Japanese knotweed on your premises.

Call our team on 01932 868 700 for safe and effective Japanese knotweed identification, removal and treatment.

Development or construction site affected by knotweed?

Commercial solutions

Mortgage issues, encroachment, buying/selling property?

Residential solutions

NEW Knotweed Dog
Detection Service

Learn more

Japanese Knotweed Identification

japanese knotweed leaves If you suspect a plant is Japanese knotweed, then it is essential to act quickly to identify the weed. While Japanese knotweed is not poisonous, it has the potential to cause significant damage to homes and costly delays on construction projects....

Japanese Knotweed Removal

Excavator screening japanese knotweed and invasive weeds As Japanese knotweed specialists, we begin the removal process by carefully assessing each site, its constraints and the client’s circumstances. From then on, we engineer tailored solutions. As each site has its own requirements, we work on a case by case basis....

Japanese Knotweed Treatment

Operative treating Japanese knotweed Tackling Japanese knotweed with herbicide treatment is the least expensive option, taking several years of repeat treatment to effect control. Herbicides can be applied using foliar spray, often the best method, but also by stem injection and leaf wiping....

Where is Japanese Knotweed found in the UK?

UK map of Japanese knotweed

Discover if Japanese knotweed is present in your area by checking our Japanese knotweed heatmap. Homebuyers can check postcodes for the potential risk and whether it might impact on a mortgage application. The map is regularly updated and already shows thousands of infestations of Japanese knotweed that have been identified in the UK. If you’re still not sure and want a more in-depth analysis of the risk factor in your area, Environet can help with a detailed site-specific survey, which will assess the risk of Japanese knotweed rhizome being present underground.

View the Exposed Heatmap to see how many sightings there are in your area of interest. Search by postcode to see whether you, your family or friends live in a high risk area.

View our Heatmap

How much does Japanese knotweed affect House Prices?

It’s a question we’re often asked, so we’ve teamed up with Expert Surveyors Ltd, the leading dedicated provider of RICS expert property valuation reports in the UK and created JK-VIM, a valuation impact model that gives indicative price reductions.

  • Explore how the value of a property can be reduced if it is affected by Japanese Knotweed
  • See the effect on value of a property if the knotweed is eliminated