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Thermal Eradication of Japanese Knotweed at North Sea Port - II

A 425m² treatment at North Sea Port using ISTT-Hot Screw technology across three batches, successfully eradicating Japanese knotweed within 5 meters of two valuable trees — including the first test zone using Geoprobe tubes and successful installation of a root barrier, with no regrowth observed.

SITE DESCRIPTION

       Treated area

425 m²

          Thermal technology

In-Situ Thermal Treatment (Hot screw) ISTT

       Main contaminant

Japanese Knotweed (Fallopia japonica)

        Site challenges

Valuable trees in the treatment zone 

     Heating configuration​

3 batches: 84 (131m2), 85 (148m2) and 86 (146m2) hot screws 

      Treatment Duration

 March–May 2026



RESULTS

✅          Successful treatment within 5 meters of two valuable                     trees

✅         First test zone with Geoprobe tubes

 ✅         No regrowth and successful installation of the root barrier

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