Treating Japanese knotweed requires a strategic and well-managed approach. Knotweed is notorious for its resilience, and without proper control, it can cause serious disruption. Professional Japanese knotweed treatment, such as foliar application of a glyphosate-based treatment or stem injection, helps prevent regrowth and minimise damage. Whether you’re a homeowner, developer, or managing public land, understanding treatment costs and planning effectively are key to protecting your property.

 

How Do You Treat Japanese Knotweed?

Our success in treating Japanese knotweed stems from a combination of in-depth knowledge and real-world experience. Team members are not only NPTC-certified for herbicide application (PA1 6AW), but also qualified by the PCA as Invasive Weed Technicians. This expertise allows us to deploy treatments with precision, quickly bringing knotweed infestations under control. However, if you plan to develop the land, Japanese knotweed excavation will be necessary.

CSJK Qualified Professionals

Your treatment plan will be handled by our trusted and CSJK-qualified professionals, who ensure that no treatment is missed and that all visits are scheduled at a time convenient for you. Our team takes great care in treating infestations while being mindful of the surrounding plants and vegetation. Each visit is communicated in advance, and your property will be respected throughout the process.

Herbicide Treatment

Herbicide treatment is one of the most effective methods for controlling Japanese knotweed, particularly during its active growing season. Your treatment plan will outline the number of treatments and the method used (foliar treatment or stem injection). Typically, well established areas will require additional visits. Following treatment a period of monitoring will take place, and should there be any regrowth it will be treated.

 

Foliar Treatment

japanese knotweed treatment - herbcide application with a knapsack sprayer
Foliar treatment involves applying a herbicide, usually glyphosate, to the leaves of the knotweed. This approach allows the plant to absorb the chemical, which travels through the plant into the root system. It is typically applied during the active growing season and requires multiple applications for maximum effectiveness.

Stem Injection

stem injection of Japanese knotweed
Stem injection is a more precise method of treatment. Here, a concentrated herbicide is injected directly into the hollow stems of the plant, ensuring that it reaches the root system. This method is especially useful in areas near watercourses or sensitive vegetation, as it limits the risk of herbicide drift.

 

Glyphosate, the active herbicide we use, is globally recognised for its effectiveness in controlling a wide range of weeds. Approved by regulatory bodies like the European Chemicals Agency (ECHA), it poses minimal risk when applied correctly. Our NPTC Level 2 (PA1 and PA6) certified professionals ensure that all treatments are carried out safely and efficiently.

 

What is the Duration of a Japanese Knotweed Treatment Plan?

Duration of treatment iconA treatment plan typically spans 3 to 5 years, depending on the size and maturity of the infestation. Multiple herbicide applications are spread over this period to ensure thorough control. Regular monitoring is also conducted to assess progress and check for regrowth.

 

Can I Obtain a Japanese Knotweed Treatment Guarantee?

Japanese Knotweed Treatment Guarantee iconAbsolutely, yes. Mortgage lenders often require a guarantee from a reputable specialist, such as accredited members of the Property Care Association (PCA) or the Invasive Non-Native Specialists Association (INNSA). An Insurance-Backed Guarantee (IBG) ensures that if the contractor ceases trading, you can still claim under the terms of the original guarantee. This type of insurance covers any regrowth or necessary remedial work, even if the original company is no longer available. Our 10-year IBG is backed by an AA- rated insurer, providing the protection lenders require, and ensuring your property remains mortgageable​.

 

How Much Does a Japanese Knotweed Treatment Plan Cost?

Japanese Knotweed Treatment Plan iconCosts vary depending on the severity of the infestation, location, and the treatment method used. Herbicide treatments are often the most cost-effective solution, but the price will increase for larger infestations or if more invasive methods, such as excavation, are needed. Requesting a tailored quote is the best way to understand the specific costs for your situation.

 

Can I Treat Japanese Knotweed Myself?

While DIY methods might seem appealing, there are important considerations. Herbicides available to the public are far less effective than those used by professionals, often leading to dormancy rather than eradication. The plant may appear dead above ground, but its underground rhizomes could still be active, leading to regrowth. Misapplication of herbicides can harm surrounding plants, and improper disposal can result in legal issues. Moreover, DIY solutions don’t provide the essential insurance-backed guarantee, which could complicate property sales.

If you choose to use herbicides, it’s crucial to follow the HSE guidelines on Plant Protection Products. Without professional help, complete eradication is unlikely, and failing to control the spread could make professional intervention more expensive later on.

 

Next Steps

To manage Japanese knotweed effectively, a structured, professional treatment plan is essential. PBA Solutions offers industry-leading services backed by insurance guarantees, ensuring the long-term control of this invasive plant. For advice on managing your knotweed problem or to discuss treatment options, contact our team of specialists today.

 

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Industry Leading Invasive Plant Specialists

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Japanese knotwed survey being carried out at a home

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For professional assistance with the identification, treatment, and removal of Japanese Knotweed, contact PBA Solutions. As accredited PCA invasive weed specialists and experts, our team are trained in the foliar application of glyphosate treatments and stem injection of knotweed in waterside locations. If you’ve recently been made aware of the plant, you can find out about japanese knotweed treatment plan costs today. Call our experienced team at 0203 174 2187 or 01202 816134 for tailored advice, site surveys, comprehensive management plans, and insurance-backed guarantees.

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