Effective Japanese Knotweed Remediation & Treatment Solutions For Properties Based in Potters Bar & Serving North London and Surrounding Counties.

Here at Evergreen Landscapes & Building Services Ltd in Potters Bar, we have treatment and removal technicians specially trained to eradicate Japanese Knotweed in commercial and domestic gardens. The issue with Japanese Knotweed is it grows fast, it spreads easily, and it can damage property and services. Due to the nature of the plant, we only use proven industry-based eradication methods and solutions, so if any Japanese Knotweed is growing on or near to your property can be dealt with in a fast and effective manner. Contact us before the negative impacts of Japanese Knotweed become a costly issue for you to manage. 
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What is Japanese knotweed?

Japanese knotweed is an invasive plant species originally from Eastern Asia.

It has become increasingly well known in recent years, and is a growing commercial problem because of the damage it can cause. It was introduced to England in the early 19th century and as early as the beginning of the 20th century it was widely recognized as an invasive species.

It is important not to ignore Japanese knotweed when you see it in your garden or building plot. It can grow quickly and costs will grow as the plant does. Call Evergreen landscapes to see how we can help.
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Identifying Japanese Knotweed

Japanese knotweed during the late spring

Reddish/purple shoots appear from the ground. These can grow up to 2cms a day so they can form dense strands of bamboo-like stems rapidly that develop green heart- or shield-shaped leaves.


Japanese knotweed during the summer

The mature Japanese knotweed stems are hollow with purple speckles and can reach up to 3 metres in height. The leaves alternate along each side of the stem, producing an obvious knotweed zigzag pattern.

Japanese knotweed by by late summer 

The knotweed flowers are creamy-white in colour and appear in lengthy cluster/spike formations. Japanese knotweed spreads mainly from its underground rhizomes/roots which lie dormant, but alive, over the winter months. 

 Japanese Knotweed can sprout and produce active Rhizome, stem and leaf growth from as little 2mm piece of rhizome material. With this plant’s invasive nature, new growth can spread rapidly causing problems all too commonly known.

Japanese knotweed growing out of a wall
Japanese knotweed bursting through tarmac
a Person holding a knotweed leaf between their hands
Treating Japanese knotweed

Legislation

It is not against the law to have Japanese knotweed growing on your premises, however if property owners fail to control the growth or it spreads from their premises to those of a neighbour, property owners can be fined £2,500.


An amendment to the Anti-social Behaviour, Crime and Policing Act 2014 includes invasive and non -invasive plants including Japanese knotweed.


Under the provisions made within Schedule 9 of the Wildlife and Countryside Act 1981, it is an offence to cause Japanese knotweed to grow in the wild.

The Environmental Protection Act (Duty of Care) Regulations 1991 state the Japanese knotweed is ‘controlled waste’ and must be disposed of into licensed landfill sites.


When buying and selling property, it is worth being pro-active in checking the property for Japanese knotweed to avoid disputes in the future. The Law Society TA6 Property Information Form was updated in February 2020 to put more pressure on sellers to declare whether their property is affected by Japanese knotweed. Mortgage lenders often require a formal Japanese knotweed management plan from a professional contractor in order to satisfy mortgage requirements.

We are certified Surveyors of Japanese Knotweed and Qualified Technicians offering a 10-year Guarantee following herbicide treatments completed.

We have treatment and removal experts specially trained to eradicate Japanese knotweed in commercial and domestic gardens.

Our professionals are here to help. If you are not sure if you have Japanese knotweed, please send images you might have to us for identification and then we can organise an on-site visit.

For a home sellers or buyers survey, contact us to find out more.
We also remove other invasive species such as Giant Hogweed and Himalayan balsam. We have many happy clients and you can check out our reviews.

Contact us before the negative impacts of Japanese knotweed become a costly issue for you to manage. 

Our Highly Effective Japanese Knotweed Removal Methods

 Evergreen Landscapes & Building Services Ltd take the eradicating process of Japanese Knotweed very seriously. We offer a 10-year guarantee on our herbicide eradication treatments.

Some of the methods we use for dealing with Japanese Knotweed include: 
  1. Herbicide treatments including spraying, injection and leaf wiping. 
  2. On-site management which might include bunding, burial, barrier installation or herbicide treatment. 
  3. Physical removal of Japanese Knotweed from the site for disposal to specific landfill centres.
  4. Continuous monitoring of the land during treatment visits.
  5. Up to date reports to the client keeping informed on the progress of our remediation works.
The methods we choose to use will vary based on your budget, your site conditions and your time frame. If you believe you might have or are aware of Japanese Knotweed anywhere on your property, please call us to discuss the problem. We will offer you sound professional advice on how best to remediate the Knotweed and protect your property.   

We will offer you our extensive knowledge and experience to best protect your property and financial investment, in an honest and professional way. Explaining and discussing with you, the options you have to deal with and to eradicate for good, any Japanese Knotweed you may have at your property.  
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 Japanese Knotweed Removal

Our certified surveyors perform a full site survey. We can then provide a written quotation, included within a Knotweed Management plan. We have a 4-step process: 
 Step 1.
Identify the plant, the extent of infestation and site conditions
Step 2.
Develop appropriate eradication strategy
Step 3.
Implement the eradication strategy
Step 4.
Monitor effectiveness of treatment implemented and completed
Call us today to discuss solving your Japanese Knotweed problem. 
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