Why Choose Us?
With over 50 years of proven expertise in Japanese Knotweed control, our commitment to excellence is backed by scientific research and industry best practices. We offer tailored solutions and a comprehensive range of services, from initial surveys to post-treatment monitoring, covering all aspects of JKW management.
What is Japanese Knotweed?
Japanese Knotweed is an invasive plant species that can cause significant issues due to its aggressive growth patterns. It typically has heart-shaped leaves, hollow stems, and small white flowers, often forming dense thickets.
Why is it Important to Control Japanese Knotweed?
Uncontrolled Japanese Knotweed poses significant risks to biodiversity by outcompeting native flora. It can also reduce property values, limit the use of outdoor spaces (amenity), and create legal issues if it spreads to neighbouring properties.
Our Services
Initial Site Survey
Our thorough inspections accurately identify the presence, extent, and context of Japanese Knotweed on your property. This helps us assess its impact and create a detailed management plan.
Management Plan Drafting
We draft a detailed document outlining the problems caused by JKW and propose various treatment options such as herbicide, excavation, and encapsulation. Each method is detailed with its advantages and disadvantages, and the plan includes a tailored methodology, schedule, and evaluation criteria.
Methods of Knotweed Control
- Herbicide Treatment: Generally repeated over several consecutive growing seasons.
- Stem Injection of Herbicide: Used when spraying is not feasible, such as near watercourses.
- Excavation and Removal: Contaminated materials are removed from the site.
- Excavation and Encapsulation: On-site management of contaminated arisings.
- Relocation for Treatment: Contaminated arisings are treated elsewhere on-site.
- Vertical Barrier Installation: Prevents JKW from spreading across site boundaries.
Expertise and Credentials
Since 1972, we have been at the forefront of Japanese Knotweed control, with notable projects like the Cardiff Trial report, a multi-year scientific study sponsored by Swansea University to evaluate the best control methods for JKW.
Our Detailed Process
Inspection and Assessment
Our initial inspection positively identifies JKW, assesses its extent, and potential spread vectors. We evaluate foliar mass, evidence of maturity, site history, and previous treatment documentation to determine the infestation's extent.
Treatment Plans
Options are detailed in our JKW management plan, available upon request. Decision criteria are based on client requirements, budget, site-specific attributes, and proximity to watercourses or traffic.
Aftercare and Monitoring
Post-treatment support includes in-house warranty periods (typically 5-10 years) and third-party indemnified Insurance-Backed Guarantees (IBG). Monitoring frequency is typically once or twice per year, as specified by the client.
Environmental and Legal Considerations
Environmental Impact
We primarily use glyphosate-based herbicides, which have a smaller environmental footprint compared to alternatives like acetic acid and hot foam treatment. Controlling JKW is inherently eco-friendly as it prevents the plant from out-competing native flora.
Legal Compliance
Property owners must prevent the spread of JKW across property boundaries. We inform clients of their legal obligations and ensure compliance through effective management practices.
Frequently Asked Questions
How can I identify Japanese Knotweed on my property?
Japanese Knotweed typically has heart-shaped leaves, hollow stems, and small white flowers. It often forms dense thickets.
What methods do you use to control Japanese Knotweed?
We use a variety of methods including herbicide treatments, stem injection, excavation and removal, excavation and encapsulation, relocation for treatment, and vertical barrier installation.
How long does it take to control Japanese Knotweed?
Effective control typically requires several growing seasons of treatment and monitoring to manage the plant's growth and prevent its spread.
Are your treatments environmentally friendly?
Yes, we primarily use glyphosate-based herbicides, which are considered to have a smaller environmental footprint compared to other treatments.
Do you offer any guarantees?
Yes, we offer in-house warranty periods (typically 5-10 years) and third-party indemnified Insurance-Backed Guarantees (IBG) to ensure peace of mind.
What should I do if I find Japanese Knotweed on my property?
Contact us immediately for a comprehensive site survey and tailored management plan. Early intervention is crucial for effective control.
How much does Japanese Knotweed control cost?
The cost varies depending on the extent of the infestation and the chosen treatment plan. Contact us for a detailed quote based on your specific situation.