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Japanese Knotweed

Welcome

Japanese Knotweed is recognised by the Environment Agency as the UK’s most invasive species. Its aggressive growth causes extensive damage to buildings, foundations, and roads, resulting in costly delays to development projects along with hefty fines, plus potential imprisonment. 





Find out more

Specialists in the Treatment & Removal of Japanese Knotweed

Japanese Knotweed is recognised by the Environment Agency as the UK’s most invasive species. Its aggressive growth causes extensive damage to buildings, foundations, and roads, resulting in costly delays to development projects along with hefty fines, plus potential imprisonment. 

About Us

Background

Japanese Knotweed is a violent and fast growing weed which has a broad root system that spans up to 7 metres wide and 3 metres deep. 

Japanese Knotweed is a danger to properties, biodiversity and infrastructure due to its damaging invasive nature from spreading rapidly


Japanese Knotweed is a violent and fast growing weed which has a broad root system that spans up to 7 metres wide and 3 metres deep. 

Japanese Knotweed is a danger to properties, biodiversity and infrastructure due to its damaging invasive nature from spreading rapidly

Additional Information

Japanese Knotweed is a violent and fast growing weed which has a broad root system that spans up to 7 metres wide and 3 metres deep. 


Japanese Knotweed is a danger to properties, biodiversity and infrastructure due to its damaging invasive nature from spreading rapidly

Learn More

Find out more

Stems

Leaves

Leaves

The Stems of Japanese Knotweed are green in colour with red specks. The Stem itself is hollow in nature, very much like bamboo.


Leaves

Leaves

Leaves

The leaves of a Japanese Knotweed plant are heart shaped and lush green in the summer.

Flowers

Rhizome (Root)

Rhizome (Root)

The Flowers of Japanese Knotweed are white in colour and bloom in the late summer.


Rhizome (Root)

Rhizome (Root)

Rhizome (Root)

The rhizome exterior is a dark brown colour and the center core is orange/yellow. Fresh rhizome can be easily snapped.

Damage caused by Japanese Knotweed

Japanese Knotweed can be very impactful and costly to home and business owners. Its roots are able to push through hard materials such as brick and concrete and sometimes even roads causing structural damage to any sort of infrastructure. Three Shires Invasive Team have the qualified staff to safely tackle Japanese Knotweed.

Grab interest

There is no law against having Japanese Knotweed on your land, however it is illegal to allow Japanese Knotweed to spread onto neighbouring properties or land. If you have Japanese Knotweed on your land you have a legal obligation to prevent its spreading. Failure to do so is an offence and you could be fined.   


Furthermore, there are strict rules on the disposal of Japanese Knotweed and a licensed company such as JBB Knotweed Solutions should be appointed for any offsite disposal requirements.

Solutions

The treatment and eradication of Japanese Knotweed is a common requirement on construction and civil infrastructure projects in all areas of the country; it is said that there is not a single square kilometre in the UK that does not have Japanese knotweed growing within it. The cost to the UK economy of dealing with Japanese knotweed is estimated to in the region of £2 billion.



Three Shires uses the following techniques (or a combination of the below) to eradicate the Japanese Knotweed:

  

  • Herbicide treatment including stem injection
  • Cell burial/site encapsulation
  • Soil screening
  • Managed and monitored excavation and disposal
  • Insulation of root barrier membranes



As well as providing eradication solutions our team carry out JK and Invasive weed site surveys, produce detailed Invasive weed reports as well as precautionary methods of working and Japanese Knotweed management plans.For many of our large construction clients we are able to provide Japanese Knotweed clerk of work services; this allows customers to use their on-site plant and resources under our instruction to deliver the remediation works. This reduces cost whilst maintaining best practice and compliance with legislation.



Damage caused by Japanese Knotweed

Japanese Knotweed can be very impactful and costly to home and business owners. Its roots are able to push through hard materials such as brick and concrete and sometimes even roads causing structural damage to any sort of infrastructure. Three Shires Invasive Team have the qualified staff to safely tackle Japanese Knotweed.


Is it illegal to have Japanese Knotweed on my land?

There is no law against having Japanese Knotweed on your land, however it is illegal to allow Japanese Knotweed to spread onto neighbouring properties or land. If you have Japanese Knotweed on your land you have a legal obligation to prevent its spreading. Failure to do so is an offence and you could be fined.   


Furthermore, there are strict rules on the disposal of Japanese Knotweed and a licensed company such as JBB Knotweed Solutions should be appointed for any offsite disposal requirements.

About

Three Shires Invasive Solutions combats the threat of Japanese Knotweed, which has the capacity to cause untold damage when left untreated, because it will invade sensitive wetlands, driving out native wildlife and taking over further as time goes by. 


Consequences of the effects of Japanese Knotweed include economic loss associated with control costs in the construction sector. Japanese knotweed damages concrete, tarmac, flood defences and the stability of river banks. Housing is a particular problem, with untreated Japanese knotweed leading to a decrease in value of a property. Just as damaging is the adverse publicity that it can bring to a company, therefore the services provided by Three Shires Invasive Solutions are absolutely crucial. The expert team provides solutions to all Japanese Knotweed and invasive weed requirements for landlords, housing associations, developers, large scale civil engineering contractors and consultants. 


Headed up by Simon York, Invasive Solutions has worked on prestigious projects such as eradication on Wembley Park and the site of a London-based international event in 2012. 


The Company isn’t restricted to one method of invasive weed eradication either, and has a number of techniques that include herbicide treatment including stem injection, 

cell burial/site encapsulation, managed and monitored excavation and disposal, insulation of root barrier membranes and soil screening. 


Not content with just providing eradication services and solutions, Three Shires carries out site surveys that result in the production of invasive weed reports. All projects come complete with precautionary Methods of Working and Japanese Knotweed management plans are drawn up for each customer. This level of experience is invaluable on sites with Japanese knotweed because it allows clients to use resources on site under the supervision of Three Shires, which ultimately results in the remediation work being delivered. 


Best practice and compliance of legislation is constantly achieved while simultaneously reducing costs. Undoubtedly, Japanese knotweed is the most high profile invasive weed, but there are others which Three Shires also provide solutions for. If a site has the likes of ragwort, rhododendron, aquatic invasive, giant hogweed or Himalayan balsam weeds on site, Three Shires has the expertise to deal with this effectively, ensuring the weeds are eradicated from any site.


SOURCE: https://www.ukconstructionmedia.co.uk/wp-content/uploads/Three-Shires-eBook-low-resolution.pdf




Japanese Knotweed Identification, Legislation & Solution

The Problem

Japanese Knotweed is recognised by the Environment Agency as the UK’s most invasive species, as its aggressive growth causes extensive damage to buildings, foundations, and roads, resulting in costly delays to development projects along with hefty fines and potential imprisonment. 



Legislation

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Information & Identification

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The Solution

The treatment and eradication of Japanese Knotweed is a common requirement on construction and civil infrastructure projects in all areas of the country; it is said that there is not a single square kilometre in the UK that does not have Japanese knotweed growing within it. The cost to the UK economy of dealing with Japanese knotweed is estimated to in the region of £2 billion.



Three Shires uses the following techniques (or a combination of the below) to eradicate the Japanese Knotweed:

  

  • Herbicide treatment including stem injection
  • Cell burial/site encapsulation
  • Soil screening
  • Managed and monitored excavation and disposal
  • Insulation of root barrier membranes



As well as providing eradication solutions our team carry out JK and Invasive weed site surveys, produce detailed Invasive weed reports as well as precautionary methods of working and Japanese Knotweed management plans.For many of our large construction clients we are able to provide Japanese Knotweed clerk of work services; this allows customers to use their on-site plant and resources under our instruction to deliver the remediation works. This reduces cost whilst maintaining best practice and compliance with legislation.



Japanese Knotweed Solutions

Herbicide Treatment & Stem Injection

Herbicide Treatment & Stem Injection

Herbicide Treatment & Stem Injection

Three Shires Invasive Weed Solutions provide a faster, more efficient and more Environmentally friendly alternative to other comparable methods available.


Their methods have been developed with extensive on-site experience and research and is based on a detailed understanding of Japanese Knotweed and how it propagates.

Cell Burial/Site Encapsulation

Herbicide Treatment & Stem Injection

Herbicide Treatment & Stem Injection

This is often the quickest method for eradicating Japanese Knotweed within a site.


The contaminated soil is carefully excavated and transported on site to a specially dug burial pit lined with a specialist Japanese Knotweed Barrier. 


Uncontaminated earth is then placed on top of the sealed cell, allowing the land to be used for Landscaping.

Soil Screening

Herbicide Treatment & Stem Injection

Soil Screening

Soil Screening by Three Shires Invasive Weeds is carefully managed by a mechanical and hand screening process.


The contaminated earth is excavated and placed on a conveyor where Japanese Knotweed Rhizomes are handpicked from the soil.
This process offers huge cost savings by reducing the volume of contaminated material sent to Landfill by 97%.

Managed Excavation

Root Barrier Membrane Installation

Root Barrier Membrane Installation

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Root Barrier Membrane Installation

Root Barrier Membrane Installation

Root Barrier Membrane Installation

Give customers a reason to do business with you.

Invasive Weed Control

Root Barrier Membrane Installation

Invasive Weed Control

Give customers a reason to do business with you.

Contact us to discuss your project

Contact Us

Invasive Solutions Overview

Invasive Weed Solutions is part of Three Shires Ltd.


For over 25 years Three Shires Ltd has developed long standing relationships with the UK’s leading Construction Contractors, House Builders, Civil Engineers, Developers, Environmental and Ecological Consultants.

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Contact Information

Three Shires Ltd 

Piper Hole Farm

Eastwell Road, 

Scalford

Leicestershire, 

LE14 4SS


Phone: 01664 444 604



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