The use of our herbicide is often the most efficient and cost effective method to remove and treat Japanese knotweed.
Our Japanese knotweed removal and treatment plan allows the herbicide to reach both the tall Japanese knotweed foliage as well as the root system that can grow up to 12m from the crown of the plant.
The Japanese knotweed herbicide spray can reach the highest Japanese knotweed foliage. Our stem injection spray method ensures that only the plant targeted is treated, so that other plants in the area can begin to thrive once again.
The stem injection delivers a calibrated dose of herbicide directly into the bottom node of the stem, ensuring the herbicide is delivered to the crown and root system (rhizome) with no native species being affected.
The Japanese Knotweed herbicide and stem injection treatment and removal program can generally take anywhere from 1-4 growing seasons to be totally effective. It really depends on how widespread the knotweed problem has become.
However, if you are trying to sell your property, our Japanese knotweed guarantee is effective from the first day of the treatment and removal process.
A free Weedtec Japanese knotweed inspection can estimate the time it will take to fully treat the affected areas.
If you suspect you have Japanese knotweed on your property, call Weedtec on 0845 224 9941.