Treatment Plans:

This process involves excavating and removing contaminated soil using controlled methods to prevent cross-contamination and ensure compliance with waste legislation.

IPM manages the entire process on your behalf, including all legal and regulatory requirements. As a licensed waste carrier, we transport waste to approved landfill facilities and benefit from preferential disposal rates.

The vast experience of the team means that the process can be completed efficiently, without impacting on other works on site.

For time-critical projects, infested soil can be excavated and relocated to a designated on-site quarantine area for subsequent herbicide treatment. The material is contained within the site boundary under controlled conditions, clearly identified, and isolated using a root barrier system to prevent further spread of contamination. This approach enables development works to proceed with minimal disruption, while the infestation is treated at a later, more suitable stage using stem injection techniques. 

In circumstances where project programmes are constrained and available site space is limited, excavation and on-site burial may provide a practical remediation solution. This approach involves the excavation of infested material and the secure containment of contaminated soil within a specially engineered sealed membrane capsule installed on site.

Following reburial, the encapsulated area must remain permanently undisturbed and its location accurately recorded on all relevant site plans and documentation. 

Our stem injection process, which is proven to be the most effective and environmentally-friendly form of treatment, has been regularly praised in the press. With Japanese Knotweed and other invasive plants occupying a vast number of development sites and domestic properties in the UK, and our reputation for excellent and effective treatment, we are sure this will continue to be the favoured treatment method.

Stem injection involves injecting a concentrate of glyphosate herbicide into each cane of the plant using specialist equipment specifically designed in the treatment of Japanese knotweed.

Japanese knotweed absorbs the glyphosate into the rhizome with a faster absorbency rate than that of foliar spraying. Less impact to the environment, as the injected herbicide has no effect on the surrounding vegetation and is also safe to use near water, stem injection is a more effective eradication method.

Results will be seen within two weeks. From injection the weed goes dormant and visible signs of foliar decay appear within days after treatment. In the event of any canes being missed during the process, these will be visible a re-application  will be carried out as part of the treatment process. Treatment is not affected by wind, rain or convection. Stem injection can be used at any time during the treatment window.

Where project timescales are critical and site space is limited, excavation and on-site burial can provide an effective remediation solution. Contaminated material is excavated and securely contained within a specially engineered sealed membrane capsule on site.

The encapsulated area must remain undisturbed and be clearly recorded on all relevant site plans and documentation. 

Approval from the Environment Agency is required prior to implementation, ensuring compliance with all applicable regulatory requirements.

Foliar herbicide application is well suited to large infestations where immediate treatment deadlines do not apply and environmental sensitivities are limited. The herbicide is applied directly to the foliage and absorbed through the leaves before being translocated to the rhizome system.

Multiple treatments are typically required to achieve effective control, with remediation programmes often taking up to 5 years to complete. Treatment success is dependent on suitable weather conditions and is generally most effective during the autumn growing season.