Japanese Knotweed Identity Parade

Wildlife and countryside Act 1981. Section 12 (2)
"If any person plants or otherwise causes to grow in the wild any plant which is included in Part 2 of schedule 9, he shall be guilty of an offence."

Environmental Protection Act 1990. Part 2
"Any soil or plant material contaminated with Japanese knotweed that you discard, intend to discard or are required to discard is to be classified as controlled waste."

The Control of Pesticides Regulations 1986
"Requires any person who uses a pesticide to take all responsible precautions to protect the health of humans, creatures and plants."

Japanese Knotweed or Fallopia japonica

Introduced to Britain in the mid-nineteenth century as a useful, fast growing, ornamental specimen plant by Victorian plant hunters. Establishing itself in the UK from its native Japan, Korea and China, where it has to deal with multiple forms of attack, from being eaten by mammals and insects, affected by disease and growing in volcanic soils, which all contributed to the evolution of a plant that has to work very hard to survive in its native land.

Introduce it to a country with no such pressures, and you have a plant that continues to grow as vigorously in a more preferable environment. This is why it grows faster, spreads quicker and is why it’s such a challenge to eradicate.


So how does it grow?

The plant is a perennial, with its shoots growing every year from its rhizome root mass. Once established it creates an inhospitable habitat for other plants leaving the surrounding area lacking in biodiversity.

Below ground it spreads its rhizome roots out, expanding the plant's size, searching out water sources and areas of space to put up new stems. Unfortunately if this is occurring near constructions such as walls, foundations or drains, any cracks or holes could be exploited and grown into. The rhizomes then expand through normal growth and it’s here that the potential damage can be caused to manmade structures, such as house foundations, which is why this plant has earnt itself such a notorious reputation.


Fear not, we have the solutions.

There are multiple control options available to deal with this plant, all of which our highly qualified surveyors can advise and help tackle the problem and return your landscape to its former self.

Control Methods

Herbicide treatment

Our complete package plan provides a circle of treatment from start to finish ensuring that works starts immediately, with activities throughout the treatment plan which are carried out in the most productive way to maximise the speed and effectiveness of the control option. Providing a service through to the end of the plan to re-establish the environment that was lost.

We will not only control and remove the problem, but also provide you with a commitment to the future.

All these details and recommendations will be presented to you in the client focussed invasive Weed Control Management Plan, tailored specifically to your individual infestation.

Control Methods

On-side relocation bund

If herbicide treatment in its original location is not an option, then on-site relocation may be the control option best suited for the situation. The best control method for your individual infestation will be assessed by our highly qualified surveyors and recommended in your tailored Invasive Weed control Management plan.

A relocation of the infestation can, in certain circumstances, provide the opportunity to free up the area for development, and continue the treatment plan elsewhere on site.

Our complete package plan will provide a circle of treatment from start to finish and will be detailed for your approval in the Invasive Weed Control Management plan provided.

Control Methods

Burial or removal from site

On-site burial of the infestation is possible in the right circumstances, or if necessary complete removal from site is also possible. All control options will be considered during the detailed, on site survey and the recommendations listed in the Invasive Weed Control Management Plan provided to the client. All considerations will be made before work commences and the pros and cons of each option discussed and planned thoroughly. An itemised quotation will be provided showing all the costs involved and regardless of which control method is decided upon, our Complete Package Plan will provide the client with the security that we are working in the best interests of your environment and the future of the landscape and development.