Residential Knotweed Removal
Serving Your Local Area

The only real way to get rid of Japanese Knotweed permanently is to put in place an eradication management plan.

Cutting Back

Cutting back, and digging up the plant that you see above ground is not an effective method of dealing with it at all. A Knotweed plant can have roots that go up to four metres underground, so just “killing” the top bit will simply provide a temporary visible belief that you have solved your problem, but the underground root system (rhizome) is still alive and kicking, and will return in a short space of time. The only way to get rid of it permanently is to attack the root system, something that we have been experts in for almost 40 years.

Herebicide Spray

Timescale: 3 – 4 growing seasons
This is the most widely used solution for the eradication of Japanese Knotweed. We use a sprayer with herbicides applied to the surface of the leaf. This method is best used during the summer months when we have maximum plant growth, the more leaf growth we have the better and more effective the treatment. We visit your property and spray the knotweed twice in the first two growing seasons.

Stem Injection

Timescale: 3 – 4 growing seasons
This method involves injecting the herbicide directly into the stem of the plant. It is primarily used outside of the main summer growing season when we have no leaf area to spray.

Stem injection is a system used when the area of knotweed growth is in smaller concentration around your property.

Dig Out and Remove

Timescale: On-site work, depends on the size of the infested area, normally 1-2 weeks, followed by a monitoring plan.
This method involves excavating the Knotweed soil area and either removing off-site to a dedicated landfill, or burying on site in a cell. Primarily this is a method utilized for major development and building work, but it can be used on private property, although the cost is higher than the other two methods above.

This is a quick method to remove and eradicate the infected area, and allow the use of the previously affected area without restrictions.

Buying or selling a home with Japanese Knotweed

Have you had a survey come back and tell you that you have knotweed that is holding up the sale/purchase of your property? We have been resolving such problems for over 30 years. Our Japanese Knotweed management plans with our 10 Year Insurance Backed Guarantee will get your purchase/sale back on track within just a few days. 

Japanese Knotweed removal cost

We offer a fixed price cost for the removal of your Japanese Knotweed with a Herbicide treatment programme. 

Excavation dig out & removal of your Japanese Knotweed depends on the size of the area, and access to the site. Call us for a no-obligation discussion on this removal package.

Legal advice on Knotweed

Our staff are all experienced in the legal implications of Japanese Knotweed and are happy to speak to you and provide you with help and advise.

Call us today on 01793 700 100 for Japanese knotweed removal, surveys, eradication and advice.

Why choose Elcot?

  • Elcot Environmental was founded in 1963 and we now have a proud 55-year history in weed control
  • All our treatment packages are environmentally friendly and safe for children and animals
  • We can be on-site within 24 hours and can start your treatment immediately
  • After our survey, we will provide you with an individually tailored Japanese Knotweed Management Plan
  • We will also provide you with a 10-year insurance backed guarantee, so you can rest easy in the knowledge that any re-occurrence of knotweed, which is rare, will be treated free of charge
  • All our treatment packages are fixed cost, so you only pay one fee – no hidden surprises
  • We are the UK’s original Japanese Knotweed Removal company and developed the methods for treating and removing Knotweed which are now  the industry standard

Do you need professional help to remove Japanes Knotweed? 

We don’t just treat your Knotweed, we help sell your home. 

Homeowners/buyers – We provide a 10 year insurance backed guaranteed Knotweed removal package that is acceptabel to mortgage lenders. 

We are with you every step of the way. No Drama, just facts and common sense.  The simple steps to eradication. 


Our Services


We can eradicate and manage Japanese Knotweed or other invasive weed issues.


Site Clearance

Our land clearing and tree felling services are designed to get your site ready for development.



We can remove Japanese Knotweed from your property permanently.


Swindon Office

Blunsdon, Swindon, SN25 5DL

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Call Us

01793 700100


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Swansea Office

Princess Way, Swansea, SA1 3LW

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Call Us

01792 930199

Elcot Environmental Ltd

The Nurseries
Kingsdown Lane
SN25 5DL

Contact Us

01793 700100