The Knotweed Company Ltd

The Knotweed Company Ltd Japanese knotweed eradication throughout England and Wales. Reliable, cost-effective treatment and practical, plain-speaking, professional advice.

Our skilled professional team have a combined experience of over 30 years in invasive weeds treatment, particularly the treatment of Japanese knotweed. We provide proven solutions as well as plain speaking, no nonsense, practical advice. We pride ourselves on our honest approach to all our clients, who range from government bodies and national developers to individual private homeowners. Our Prope

rty Risk Survey Reports can provide expert advice to assist in cases where the presence of knotweed is hampering the sale of property. All of our programmes and advice reference best practice and the codes of practice issued by the Environment Agency (EA), the Property Care Association (PCA) and the Royal Institute of Chartered Surveyors (RICS). In addition, our Director is a BASIS-qualified advisor on the use of herbicides. All services are backed by a range of warranties to suit requirements. We are a PCA-approved contractor. Our services include:

o Herbicide Treatment
o Excavation and Disposal
o Root barrier supply and installation
o Knotweed relocation or burial
o Property Risk Survey Reports
o Knotweed Management Plans
o Verification Surveys/Reports
o Knotweed Presentations
o Expert Witness
o Extended Warranties
o Insurance-Backed Guarantees

We also provide advice and treatment of other invasive species besides Japanese knotweed, including Giant hogweed, Himalayan balsam, Common ragwort, Bamboo, etc. If you are a building developer or are a private individual intending to develop part of your land we strongly recommend you have your development site checked for the presence of knotweed BEFORE the site is cleared or the ground is disturbed by demolition, soil sampling, etc. Identifying and isolating the knotweed early will provide more options for treatment, prevent unnecessary delays or stoppages to construction works and ensure you remain within the law.

Japanese knotweed (well what else should I talk about?) is actively growing at the moment. I came across this beauty in ...
16/04/2025

Japanese knotweed (well what else should I talk about?) is actively growing at the moment. I came across this beauty in Lincolnshire earlier this week, 1.2m tall already and still growing fast! This represents a growth rate of well over 1 foot a week... For the time of year, Japanese knotweed is indeed making fast growth, however it is still quite possible for a late frost to kill off (or at least damage) all this new growth. It is of course far too early to start herbicide treatment, and this cannot be effectively started until June (at the earliest!). As usual at this time of year, I speak about monitoring sites post treatment. I have (again) heard about contractors doing their monitoring of treated sites in April - it is far too early for treated sites to be monitored, & these visits are meaningless. The PCA has issued new guidance for monitoring & this stipulates that monitoring must only take place for Japanese knotweed in late summer.

26/03/2025

Plant identification... Last week I went to a development site in Cardiff to look at some Cotoneaster.
The site had considerable quantities of Cotoneaster plants, & a concern had been raised that these might be Schedule 9 species & therefore controlled waste.
I carefully examined the plants, confirmed that they were all of the same species (it is quite possible for several Cotoneaster species to exist on site) and was able to identify the plants as being Cotoneaster conspicuus & that this species is not included within Schedule 9.
Identifying plants down to species is a real skill, & I must thank my tutors at Writtle College from the 1980s for training me. A good text book (Clive Stace, New Flora of the British Isles) is of course required, as is a small kit to take on site (hand lens (x10), rulers, secateurs, etc.). The hand lens & Felco secateurs have been by my side for my entire career, as I purchased them as a fresher at Writtle College in 1986.
Does anyone else use tools that they purchased nearly 40 years ago?

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Address

Unit 3 Royal Oak Court
Daventry
NN118PQ

Opening Hours

Monday 8:30am - 5pm
Tuesday 8:30am - 5pm
Wednesday 8:30am - 5pm
Thursday 8:30am - 5pm
Friday 8:30am - 5pm

Telephone

+441327703129

Website

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