Similarly, you should refrain from chopping, trimming, and breaking the stems of the knotweed plant. This is as it can also promote growth and spread of the knotweed. The rhizomes of Japanese knotweed run very deep into the ground. Therefore, if you just remove the initial layers of knotweed, it will continue to grow as the roots run deep into the soil. Furthermore, one method to manage knotweed (if suitable based on your survey) is through excavation.
On discovering the Japanese knotweed, it is important to evaluate the approximate distance to any infrastructure. Japanese knotweed rhizomes spread quickly and deep underground being strong enough to disrupt the surrounding landscape and infrastructure. It is imperative to check this as if it is on a property boundary or imposes on neighbouring land it can consequently result in legal action. In legal disputes, regarding Japanese knotweed, a P35 Expert Report is required to be submitted. A P35 Expert Report is a legal document which is proving liability if the Japanese knotweed is imposing on other land.