We've been successfully removing Japanese knotweed
in the South of England for 23 years.

Do you need help with Japanese knotweed?



Call us today on 01932 868700 for Japanese knotweed removal, surveys and advice in:

  • Winchester,
  • Reading,
  • Guildford,
  • Southampton,
  • Aldershot,
  • Portsmouth,
  • Bournemouth,
  • Haselmere,
  • Chichester

and all other locations in Hampshire, Oxfordshire, Berkshire and Wiltshire.


Why Choose Us?

We are the UK’s leading specialist in Japanese knotweed removal for both residential and commercial properties.

Established in 1996, our proven track record and insurance-backed guarantees ensure you can trust our safe, efficient and highly-effective Japanese knotweed removal service.

Find out more about our services.



Our Experience

Our friendly, dedicated and highly skilled Southern team of knotweed specialists can act quickly to solve your knotweed problem.

Our Guarantee

We guarantee all our work. For your ultimate peace of mind our work is underwritten by Lloyds, an A-rated insurer. 

Our Service

We are committed to delivering a removal service that works for you. Over 90% of our customers rate us as ‘Excellent’ or ‘Good’.

Our Speed

Everything is in place to respond quickly to your needs. Within hours of your instruction we can issue your insurance-backed guarantee.

Our Environmental Awareness

We have developed zero waste-to-landfill solutions that offer eco-friendly ways to remove your Japanese knotweed.

Our PCA Membership

The Property Care Association have approved our policies, procedures and staff. You can trust us to resolve your knotweed problem.





  I am delighted to report contracts were exchanged today so a very happy seller and a very happy buyer! THANK YOU so much for actioning the report so professionally and so quickly – we will, without hesitation recommend you in the future. 

Richard Prynne, Home Owner - Central England



To start fixing your Japanese knotweed problem today,

call our team for specialist advice and effective solutions.

Contact Us

The UK’s leading Japanese knotweed expertsUpright Japanese knotweed leaves

Our Southern Japanese knotweed specialists have been removing this damaging, invasive weed from commercial and residential property and land since 1996.

We are now the UK’s leading experts in research into Japanese knotweed and its eradication and treatment.

Is your property at risk?

  • Japanese knotweed can delay or prevent your house sale
  • It can very quickly spread and ruin your garden
  • It is incredibly difficult to remove
  • If left untreated it can cause costly damage to your home
  • If it spreads it can create acrimonious and expensive legal battles with your neighbours

For advice on knotweed treatment and removal, call our team of experts.

How we can help

Environet is trusted by large property developers, construction firms and landowners to safely and effectively control, treat and eradicate invasive weeds such as Japanese knotweed.

And we have had more than 3,000 happy clients call us in to get the job done.

You can trust us for:

  • Specialist advice
  • A swift and efficient response
  • Highly-effective eco-friendly solutions
  • Safe working practices around your property
  • Flexible working schedules to suit you
  • Tackling the immediate problem and preventing any future damage
  • Work that is covered by a 10-year insurance backed guarantee, underwritten at Lloyds


Trust us to get the job done.

Our Japanese knotweed removal work comes with a 10-year insurance backed guarantee.

01932 868700

 Environet responded to our initial enquiry in an exemplary fashion, by attending site within the timescale provided along with providing us a clear and concise remediation strategy in line with our build programme, ensuring no delays on site which, as developers, is key. All personnel we dealt with where professional and courteous, and fully liaised and conformed with the PC and the specific site requirements and provided all relevant information in a timely manner. 
Ethan Ballam, Technical Manager - Devine Homes PLC

Exposed: Our Japanese knotweed Heatmap

Map of Japanese knotweed in southern England

Discover if Japanese knotweed is present in your area of the South of England by checking our Japanese knotweed heatmap.

This is the UK’s only interactive, regularly updated knotweed map – it’s just part of our ongoing research into the effects of this plant. Ideal if you are buying a home in the area – to identify potential risk and threats to your mortgage application.

We’ve already charted thousands of identified infestations of Japanese knotweed – but we can also offer a detailed, site-specific survey that can also determine the likelihood of Japanese knotweed rhizomes being present, hidden in the soil.


Worried about Japanese knotweed?

Call to speak to the specialists

01932 868700


Our Services

Not surprisingly the Environment Agency describe Japanese knotweed as the UK's most aggressive, destructive and invasive plant.

We’ve been successfully removing it for 23 years. Our expert team can resolve your knotweed problem – so don’t believe all the scare stories you’ve read in the press.

All of our work comes with a 10-year insurance backed guarantee, underwritten at Lloyd's. This means you can trust us to do the job well - and nearly all banks and building societies will trust our guarantee as a security for making you the mortgage offer you need.

Over the years we have developed a range of solutions to deal with Japanese knotweed. We assess each property carefully, taking into consideration your circumstances.

And then we propose a tailored solution that is perfect for you.


  Environet's Japanese knotweed eradication has proved to be highly effective on our development sites. Thank you for your excellent service, fast response and professional consultancy support. 

Nigel Tompsett, Commercial Director - Berkeley Group PLC



Need help or advice about Japanese knotweed?

Trust us
01932 868700