Knotweed Services (UK) Ltd offer our clients professional services and options, which are bespoke to individual client’s specifications and requirements.

FROM THE
POINT OF
INITIAL CONTACT,
KNOTWEED
SERVICES WILL
GUIDE YOU
THROUGH
THE PROCESS.

RESIDENTIAL JAPANESE KNOTWEED REMOVAL.

WHAT YOU NEED TO KNOW

RESIDENTIAL JAPANESE KNOTWEED REMOVAL.

WHAT YOU NEED TO KNOW

As Infestations vary considerably from property to property it is therefore not surprising that the application technique will too. It may be necessary to use only one method of treatment or the combination of different methods.

As this is nature we are dealing with, our Japanese Knotweed specialists are trained to factor in all considerations in order to achieve optimal results. Decisions with regards to the methods of treatment opted for, will ultimately be decided by the ongoing assessment of site-specific infestations and the influencing factors/variables.

Therefore, the application procedure, giving the maximum efficacy with minimum waste and environmental impact will be tailored to specific sites.

As PCA approved Japanese Knotweed specialists, we are also guided by the latest research and development which gives guidance to the optimal time for treatment.

The latest research from Swansea University, released April 2018 by Dr. Dan Jones & Professor Dan Eastwood found that:

Applying the wrong herbicides at the wrong time of the year, leads to greater herbicide use and environmental impacts. The 4-Stage Model that we have developed links herbicide selection and application with the seasonal surface-rhizome flows in the Knotweed plant. This seasonal targeting of Knotweed delivers better results and uses lower doses of herbicide across the whole treatment life-cycle. For the public and land managers, this means more affordable treatment that is also more environmentally friendly than traditional, blanket herbicide application.”

(Dr. Dan Jones – Swansea University).

Following the release of this research, Knotweed Services (UK) Ltd now operate using the 4-stage model which identifies the optimal time for treatment.

OUR PROCESS.

1. IDENTIFICATION OF JAPANESE KNOTWEED

The easy way to identify Japanese Knotweed is by sending us your images. It’s a quick and free service – simply fill in the form (at the bottom of our website) or email your images to us on info@knotweedsevices.co.uk

The images below show you the different appearances of Japanese Knotweed in each season. If you are 100% sure it is JKW and this has been identified on a home buyers survey, a valuation survey or even a gardener, please progress to Step 2.

Spring (March – April)
Shoots and stems are a purple/red colour with curled pinky reddish leaves. As the canes grow the leaves gradually unfurl and turn green.

Summer (May – August)
Shoots and stems are green with purple speckles. Leaves become heart shaped and turn green.

Autumn (September – October)
Stems are virulent, growing upwards of up to six feet, cream/white flowers appear late summer/autumn.

Winter (November – February)
Stems change to dark brown and are hollow, brittle and absent of leaves or flowers.

Japanese knotweed in the 4 seasons

Spring (March – April)
Shoots and stems are a purple/red colour with curled pinky reddish leaves. As the canes grow the leaves gradually unfurl and turn green.

Summer (May – August)
Shoots and stems are green with purple speckles. Leaves become heart shaped and turn green.

Autumn (September – October)
Stems are virulent, growing upwards of up to six feet, cream/white flowers appear late summer/autumn.

Winter (November – February)
Stems change to dark brown and are hollow, brittle and absent of leaves or flowers.

Japanese knotweed in the 4 seasons

2. SURVEY CONDUCTED

From our experience we believe that a site survey is crucial for a successful remediation plan. The data obtained is used by our surveyors & technicians to devise an appropriate management plan.

It is also an essential requirement for many lenders and insurance providers. From our experience, we think that this is the most important part of our process.

A PCA Qualified Surveyor will conduct the site survey. Pictures and measurements will be recorded and a visual inspection of the property boundaries (where possible neighbouring property) will be inspected.

All factors / variables affecting the JKW will be recorded

such as:

  • The size of the infestation
  • The location
  • Nearby watercourses
  • Does the property back onto Network Rail land?
  • Access issues
  • Distance to habitable space (see table) and
  • JKW encroachment from/onto neighbouring property.

In cases of encroachment, where possible, our expert surveyors will identify where encroachment has taken place. At this stage, any future plans for the property (ie. landscaping/potential extension/renovation works) will also be discussed.

CategoryDescriptor
4

Japanese Knotweed is within 7 metres of a habitable space, conservatory and/or garage, either within the boundaries of this property or in a neighbouring property or space;

and/or

Japanese Knotweed is causing serious damage to outbuildings, associated structures, drains, paths, boundary walls and fences and so on.

Further investigations by an appropriately qualified and/or experienced person are required.

3

Although Japanese Knotweed is present within the boundaries of the property, it is more than 7 metres from a habitable space, conservatory, and/or garage. If there is damage to outbuildings, associated structures, paths and boundary walls and fences, it is minor.

Further investigations by an appropriately qualified and/or experienced person are required.

2Japanese Knotweed was not seen within the boundaries of this property, but it was seen on a neighbouring property or land. Here, it was within 7 metres of the boundary, but more than 7 metres away from habitable spaces, conservatory and/or garage of the subject property.
1Japanese Knotweed was not seen on this property, but it can be seen on a neighbouring property or land where it was more than 7 metres away from the boundary.

Table 1: Royal Institute of Chartered Surveyors (RICS) risk categories. Used by surveyors to convey the risk posed to a property.

A PCA Qualified Surveyor will conduct the site survey. Pictures and measurements will be recorded and a visual inspection of the property boundaries (where possible neighbouring property) will be inspected.

All factors / variables affecting the JKW will be recorded

such as:

  • The size of the infestation
  • The location
  • Nearby watercourses
  • Does the property back onto Network Rail land?
  • Access issues
  • Distance to habitable space (see table) and
  • JKW encroachment from/onto neighbouring property.

In cases of encroachment, where possible, our expert surveyors will identify where encroachment has taken place. At this stage, any future plans for the property (ie. landscaping/potential extension/renovation works) will also be discussed.

CategoryDescriptor
4

Japanese Knotweed is within 7 metres of a habitable space, conservatory and/or garage, either within the boundaries of this property or in a neighbouring property or space;

and/or

Japanese Knotweed is causing serious damage to outbuildings, associated structures, drains, paths, boundary walls and fences and so on.

Further investigations by an appropriately qualified and/or experienced person are required.

3

Although Japanese Knotweed is present within the boundaries of the property, it is more than 7 metres from a habitable space, conservatory, and/or garage. If there is damage to outbuildings, associated structures, paths and boundary walls and fences, it is minor.

Further investigations by an appropriately qualified and/or experienced person are required.

2Japanese Knotweed was not seen within the boundaries of this property, but it was seen on a neighbouring property or land. Here, it was within 7 metres of the boundary, but more than 7 metres away from habitable spaces, conservatory and/or garage of the subject property.
1Japanese Knotweed was not seen on this property, but it can be seen on a neighbouring property or land where it was more than 7 metres away from the boundary.

Table 1: Royal Institute of Chartered Surveyors (RICS) risk categories. Used by surveyors to convey the risk posed to a property.

3. REPORT AND QUOTATION PREPARED

If you are in the process of buying or selling a house, the report produced by our qualified and experienced

surveyors will be required by the mortgage lenders – even if the suspected plant is NOT JKW.

The detailed report will conclude the findings of the site survey and the recommendations for the best method of control/treatment. This is known as a management plan (MP) and at this initial stage, we refer to it as a proposal.

The management plan proposal will outline the best method of control/treatment specific to each individual property based on the findings of the site survey. Our bespoke Management Plans include Herbicide treatment in the forms of Stem Injection, Knapsack Spraying, Foliar Wiping & Crown Removal.

The Management Plans for herbicide packages are for a duration of 5 years and include a 10 year Warranty. Insurance Backed Guarantees are included as standard.

For customers / commercial clients requiring excavation management plans include 2 years of monitoring.

Finally, a quotation for the bespoke management plan will be prepared and sent to you, along with the management plan proposal. We aim to complete paperwork within a maximum of 7 days.

Pictures of a Japanese Knotweed Excavation

The detailed report will conclude the findings of the site survey and the recommendations for the best method of control/treatment. This is known as a management plan (MP) and at this initial stage, we refer to it as a proposal.

The management plan proposal will outline the best method of control/treatment specific to each individual property based on the findings of the site survey. Our bespoke Management Plans include Herbicide treatment in the forms of Stem Injection, Knapsack Spraying, Foliar Wiping & Crown Removal.

The Management Plans for herbicide packages are for a duration of 5 years and include a 10 year Warranty. Insurance Backed Guarantees are included as standard.

For customers / commercial clients requiring excavation management plans include 2 years of monitoring.

Finally, a quotation for the bespoke management plan will be prepared and sent to you, along with the management plan proposal. We aim to complete paperwork within a maximum of 7 days.

Pictures of a Japanese Knotweed Excavation

4. MANAGEMENT PLAN AND WARRANTY PAPERWORK ISSUED

Knotweed Services (UK) Ltd are employed to take full responsibility of the Japanese Knotweed infestation, making buying & selling property

easier as we provide all the documentation mortgage lenders / purchasers / estate agents and solicitors require.

If instructed following the quotation, Knotweed Services (UK) Ltd will commence a 5 year treatment plan (for customers / commercial clients requiring excavation management plans include 2 years of monitoring) to control the Japanese Knotweed and a 10 year warranty is issued.
A typical herbicide management plan includes:

  • 3 year Herbicide/stem injection treatment plan * (We aim to conduct 2 treatments per year) **
  • Crown removal as necessary
  • 2 years of monitoring the site for any regrowth
  • A final inspection
  • A full management plan
  • A 10 year warranty.
Japanese Knotweed Certificate

We are a PCA approved contractor, this treatment plan is fully compliant with industry standards and will be recognised by banks and building society’s to allow lending against a property.

Therefore, once payment is received, the paperwork is issued immediately, which can be sent directly to all parties. Hence, this process should not hold up the buying or selling process.

* As we are dealing with nature, we constantly assess the effectiveness of treatment. Every JKW infestation, in different environments, reacts differently. Knotweed Services (UK) Ltd will treat for either 2 or 3 years, whichever is necessary until successful. ** Dependent on how effective previous treatments are, this could be more or less.

If instructed following the quotation, Knotweed Services (UK) Ltd will commence a 5 year treatment plan (for customers / commercial clients requiring excavation management plans include 2 years of monitoring) to control the Japanese Knotweed and a 10 year warranty is issued.
A typical herbicide management plan includes:

  • 3 year Herbicide/stem injection treatment plan * (We aim to conduct 2 treatments per year) **
  • Crown removal as necessary
  • 2 years of monitoring the site for any regrowth
  • A final inspection
  • A full management plan
  • A 10 year warranty.
Japanese Knotweed Certificate

We are a PCA approved contractor, this treatment plan is fully compliant with industry standards and will be recognised by banks and building society’s to allow lending against a property.

Therefore, once payment is received, the paperwork is issued immediately, which can be sent directly to all parties. Hence, this process should not hold up the buying or selling process.

* As we are dealing with nature, we constantly assess the effectiveness of treatment. Every JKW infestation, in different environments, reacts differently. Knotweed Services (UK) Ltd will treat for either 2 or 3 years, whichever is necessary until successful. ** Dependent on how effective previous treatments are, this could be more or less.

5. MANAGEMENT PLAN DURATION

The duration of the a management plan will depend on the clients situation, plans and budget.

Most of our residential treatments have a 5 year management schedule. This generally includes 2 – 3 years of treatment with herbicide followed by 2 years of monitoring. This option is best for those not intending to develop or those not under time restraints.

Our commercial clients normally have tighter time scales and do intend to develop. In this situation our remediation strategies change. Mechanical excavation of the Japanese Knotweed and it’s rhizomes is a quick solution and can be completed within weeks. We would still monitor the site for 2 years.

Patience and persistence is key for herbicide treatments. If you need a faster solution, excavation is for you!

Japanese knotweed foliar spraying

Most of our residential treatments have a 5 year management schedule. This generally includes 2 – 3 years of treatment with herbicide followed by 2 years of monitoring. This option is best for those not intending to develop or those not under time restraints.

Our commercial clients normally have tighter time scales and do intend to develop. In this situation our remediation strategies change. Mechanical excavation of the Japanese Knotweed and it’s rhizomes is a quick solution and can be completed within weeks. We would still monitor the site for 2 years.

Patience and persistence is key for herbicide treatments. If you need a faster solution, excavation is for you!

Japanese knotweed foliar spraying

6. COMPLETION CERTIFICATE ISSUED

At the end of the management plan we issue a completion certificate.

For excavation style works, the completion certificate is issued in as little as 2 years. We can remove Japanese Knotweed sometimes in a matter of weeks!

We still monitor the site for 2 years regardless of what methods we implement.

Japanese Knotweed Treatments

For excavation style works, the completion certificate is issued in as little as 2 years. We can remove Japanese Knotweed sometimes in a matter of weeks!

We still monitor the site for 2 years regardless of what methods we implement.

Japanese Knotweed Treatments

— TREATMENT OPTIONS

FOLIAR SPRAYING *
The most common herbicide application is to spray the foliage. We use powerful chemicals with the use of a knapsack. Chemicals are sprayed away from other plants to ensure that other plants aren’t damaged. The most effective time to apply foliar spraying to Japanese Knotweed is in Spring.

This is much more damaging to the underground rhizome system than applying herbicides in any other season. A qualified person should carry out any treatment that involves the use of chemicals due to their powerful and harmful nature. All of our technicians are PCA and NPTC qualified.

Foliar leaf wiping

FOLIAR LEAF WIPING *
With this treatment we employ a device to ‘physically wipe’ our chemicals onto the Japanese Knotweed leaves directly. This means our application is precise and that we can often use a higher concentration of chemical.

Wiping has advantages over spraying – the chemicals are being absorbed directly by the Knotweed and there’s less wastage and drip. It’s also a better solution if the infestation is very near desirable plants and foliage (no matter how careful we are, droplets in sprays can drift).

Japanese Knotweed Stem injection

STEM INJECTION
We apply a controlled amount of herbicide directly into the Japanese Knotweed plant. Due to being injected directly into the plant, this is the most crafty method of removal. Unlike other spraying methods (more traditional) it is not dependant or compromised by weather conditions.

With traditional spraying methods, the environment has to be taken into account because rain or wind could cause the chemicals to spread to other species and have the potential to be harmful. Due to the nature of the stem injection procedure it is considered more environmentally friendly than other methods.

Japanese Knotweed Biomass Reduction

BIOMASS REDUCTION
Biomass is a form of excavation and removal but instead of extracting all of the soil impacted by Japanese Knotweed, we only remove the infested parts of the soil.

It is an effective, productive and maintainable Japanese Knotweed control method that allows the reuse of the previously infested soil. Reducing the use of landfill.

This method is most effective when used in conjunction with other control methods. For a domestic property, layers of soil will be scraped back and rhizome will be removed as it is unearthed.

Japanese Knotweed Crown Removal

CROWN REMOVAL
Crown and stems are capable of regenerating and even small fragments of cut crown or stem are capable of regenerating and becoming a new plant
– removing these from the equation is a great strategy.

New plants will grow from the nodes of pieces of green stem, in soil or water. Mechanical cutters, will spread Knotweed in this fashion. If stems are dried until they are dark brown, they will not regrow unless the crown (base of the stem) is still attached.

With the crowns removed – our herbicide and stem injection treatments are much more effective.

KNOTWEED LAW.

— THE LAW IN ENGLAND AND WALES

SCHEDULE 9 WILDLIFE AND COUNTRYSIDE ACT OF 1981

  • It is an offence to plant or otherwise cause to grow schedule 9 species (Japanese Knotweed is classed as a schedule 9 species) in the wild, punishable by fines or imprisonment
  • If it can be shown that a schedule 9 plant has spread from a landowners property onto another property, then the landowner could be considered responsible for any damage caused and the costs of control
  • However, if landowners take all reasonable steps and exercise all due diligence to avoid spreading the plant, then they will be better protected against prosecution
  • In order to reduce the potential of fines/prosecution, landowners should have a management plan for schedule 9 species on their property and be able to show that they are following it.

THE ENVIRONMENTAL PROTECTION ACT OF 1990

  • Waste containing any part of a schedule 9 plant that could facilitate the spread of the species is classified as controlled waste and should be disposed of at a suitable waste facility, accompanied by appropriate Waste Transfer documentation!
  • You cannot just dispose of Japanese Knotweed by putting it in the bin nor can you take it to the local waste management site
  • All producers, carriers and waste facilities have a duty of care to ensure that the waste is handled and treated properly
  • Knotweed Services (UK) Ltd can legally and correctly dispose of your Japanese Knotweed during the treatment and control process. This takes all the pressure away from the landowner.
Japanese Knotweed and the Law

But what if I don’t know if there is Japanese Knotweed?

Don’t worry, we can conduct a site survey to find out.

We would highly recommend that anybody buying or selling property has a Japanese Knotweed survey. It prevents later compensation or misrepresentation claims for sellers and ensures the sale goes through fairly swiftly.

Not declaring Japanese Knotweed has, in our experience, only caused problems. We have seen cases where purchases have been seriously delayed and in some cases, even cancelled.

DEAL WITH IT EARLY AND YOU WILL FAIR BETTER!

THE LAW: BUYING AND SELLING PROPERTY

Residential Japanese Knotweed Removal

The presence of Japanese Knotweed on, or in, close proximity to a property can create difficulties for those wishing to sell their property; and for buyers wishing to secure mortgage finances.

SELLERS

It is your legal responsibility to declare if your property is affected by Japanese Knotweed on the TA6 form. You will also be asked to enclose a copy of a management plan should you have one in place. In instances where Knotweed is not declared many lenders will still request a site survey and report.

The TA6 form should be filled in accurately as inaccurate answers can lead to the buyer seeking compensation for misrepresentation. If you are unsure if the property has Japanese Knotweed, we would always advise a Japanese Knotweed Survey is conducted.

BUYERS

The known presence of Japanese Knotweed should be declared on the TA6 form. Mortgage lenders require a professional management plan with an Insurance Backed Guarantee before they will lend.

If you think the seller has given inaccurate information on their TA6 we recommend seeking legal advise as you may have a claim for misrepresentation.

NEIGHBOURS

All home owners have a legal responsibility to stop JKW encroaching onto neighbouring property. And as such, the Local Authority have it in their power to issue a Community Protection Notice (CPN) to those home owners refusing to do anything about the JKW on their property, which ultimately threatens court proceedings if no action is taken.

If Japanese Knotweed is identified on neighbouring property, we would always advise discussing the situation in the first instance and addressing the legalities before taking action with the local authority.

DON’T TAKE OUR WORD FOR IT, READ WHAT OUR CUSTOMERS SAY

  • In my capacity as a sales and lettings agent in Birmingham, I have encountered Japanese Knotweed on several occasions and I use Knotweed Services on b... Read More
  • ELLE WALTON HAS BEEN VERY POLITE IN ORDER TO RESPOND TO MY INQUIRY REGARDING KNOTWEED. SATISFIED WITH RESULTS . HAPPY CUSTOMER 🙂
  • I contacted Knotweed Services regarding a plant at a property I was in the process of purchasing. I was greatly impressed with their swift and efficie... Read More
  • Excellent staff, excellent company. They knew everything what I needed to know about Japanese Knotweed. Can’t recommend them enough. Thank you 5*... Read More
  • Excellent customer service, excellent price, excellent friendly surveyor and a speedy write up on the report which even I understood! Thank you Knotwe... Read More

SOME OF OUR CLIENTS

FREE SURVEY

We use cookies to give you the best online experience. We do not pass over any personal information to 3rd parties via our cookies. If you do not accept cookies, our website may not display or function correctly.

Privacy Settings saved!
Privacy Settings

When you visit any web site, it may store or retrieve information on your browser, mostly in the form of cookies. Control your personal Cookie Services here.

These cookies are necessary for the website to function and cannot be switched off in our systems.

In order to use this website we use the following technically required cookies
  • wordpress_test_cookie
  • fc_sb_1

Decline all Services
Accept all Services