How to Get Rid of Japanese Knotweed

Successfully removing Japanese Knotweed requires expertise, careful planning, and adherence to strict protocols.

The JBB Knotweed Solutions 5-Step Process

At JBB Knotweed Solutions, our proven 5-step approach ensures comprehensive identification, management, and removal of this invasive plant.

Step 1: Identifying Japanese Knotweed

Early and accurate identification is crucial to controlling Japanese Knotweed. The plant’s appearance changes throughout the year, and recognising these changes is essential to stopping its spread.

Our experienced surveyors are specifically trained to identify these characteristics at every stage of the plant’s growth cycle. Early detection can significantly reduce the damage caused and make treatment more effective.

  • Spring: Red-tinged shoots resembling asparagus emerge from the ground.
  • Summer: Hollow, bamboo-like canes grow rapidly, producing vibrant green, shield-shaped leaves arranged in a zig-zag pattern.
  • Autumn: White or cream flower clusters bloom, followed by the plant dying back to reveal brassy, dead canes.
  • Winter: Dark brown stems and hollow canes remain visible above ground, with early red shoots appearing towards the end of the season.

Step 2: Conducting a Comprehensive Japanese Knotweed Survey

Once Japanese Knotweed is identified, a professional survey is essential to determine the extent of the infestation and assess the best treatment options. At JBB Knotweed Solutions, we provide detailed surveys that include:

  • Accurate Identification: Identifying common invasive plant species on-site, not just Japanese Knotweed.
  • Survey Images: High-resolution images documenting the infestation.
  • Mapped Locations: Clear mapping of the locations of the Knotweed across your property.
  • Tailored Recommendations: Suggested treatment options based on your property’s specific needs, usage, and future plans.
  • Written Quotation: Transparent pricing for the recommended treatment plan, ensuring you know exactly what to expect.


This thorough assessment ensures you have all the information you need to make an informed decision and take the first step toward resolving the issue.

Step 3: Creating a Tailored Japanese Knotweed Management Plan

No two properties are the same, which is why we create bespoke Knotweed management plans to suit your unique circumstances. Each plan is designed to comply with PCA (Property Care Association) standards and meets the requirements of lenders and insurance providers.

  • For Homeowners: Plans designed for longer-term solutions, such as herbicide treatments, ensuring the plant is controlled over time.
  • For Property Sellers: Documentation and guarantees that satisfy potential buyers and mortgage lenders, ensuring the presence of Knotweed doesn’t jeopardise property transactions.
  • For Developers: Fast and efficient solutions, such as excavation, to prepare sites for construction or redevelopment.

Our management plans are detailed, transparent, and adaptable, offering solutions for even the most challenging cases.

Step 4: Japanese Knotweed Treatment and Removal

We offer a range of treatment and removal options to suit different needs, timelines, and budgets:

Herbicide Treatment

  • A cost-effective method for homeowners with time to allow for gradual control.
  • Treatments typically take up to 5 years, depending on the severity of the infestation.
  • This treatment is best done twice a year during the summer months.
  • This method is more environmentally friendly and suitable for areas not requiring immediate clearance.


Herbicide is applied to the Japanese Knotweed leaf during the growing season from a backpack or handheld sprayer. The leaf then draws the chemical into the rhizome (root) system weakening and, with successive treatments, eventually destroying the plant.

All of our operatives are NPTC qualified and follow strict guidelines for the safe handling of chemicals and working practices. Our chemicals are on the Ministerially Approved Pesticide Products (MAPP) list of herbicides and have relevant COSSH assessment.
JBB Knotweed Solutions retain documentation of the chemical usage to demonstrate our implementation of the management plan.

Excavation and Removal

  • A faster solution, often completed within weeks, ideal for construction and development sites.
  • Includes root barrier membranes, stockpiling, and licensed offsite disposal of controlled waste.
  • Ensures immediate clearance of the infestation to prepare the site for its intended use.
  • Excavations can be done at any time of year which can help keep construction projects on track.


Excavations must be carried out by Japanese Knotweed specialists to ensure compliance with legislation and minimise the risk of cross-contamination. Depending on the site and planned use, JBB Knotweed Solutions can support both on and off-site disposals.

We can remove the plants safely to the relevant registered landfill site approved to take Japanese Knotweed.

JBB Knotweed Solutions continue to monitor sites for up to 2 years to ensure no re-growth.

Important Note: Japanese Knotweed is classified as controlled waste. Attempting to remove it yourself is illegal and can lead to severe environmental and legal consequences. Trust licensed professionals like JBB Knotweed Solutions to handle the process safely and effectively.

Stem Injection and Leaf Application

A targeted application of herbicidal treatment suitable for areas where there is a risk of chemical contamination such as watercourses.

More expensive due to the manual labor of injecting each stem/wiping each leaf.

Root Barriers

  • Membranes professionally installed can contain the spread of invasive Japanese Knotweed.
  • Non-permeable and Permeable root barriers are available depending on the application.

Step 5: Monitoring and Aftercare

Our commitment to you doesn’t end when the Knotweed is removed. Monitoring and aftercare are critical to ensuring the infestation is fully controlled and doesn’t return.

  • Ongoing Monitoring: We revisit the site regularly for up to two years to check for any signs of regrowth.
  • Aftercare Plans: Bespoke aftercare options are available to provide additional support and peace of mind.
  • Guaranteed Results: We ensure successful control and provide the necessary documentation to satisfy lenders and insurance providers.


Our monitoring and aftercare services protect your investment, ensure compliance with regulations, and give you the confidence that your property is free from Japanese Knotweed.

Why Choose JBB Knotweed Solutions?

Trusted Expertise

We have the qualifications, licenses, and experience to handle Japanese Knotweed removal safely and effectively.

With over 120+ 5-star reviews, we’re known for delivering outstanding service and results. 

Every property is unique, and we design management plans that address your specific needs.

From identification to aftercare, we’re with you every step of the way.

Get in Touch

Our team is ready to help you regain control of your property with effective Japanese Knotweed management.