An invasive plant: Asian knotweed

As part of the wild river agreement, the Park and its partners are attempting to eliminate a tenacious invasive plant known as Asian knotweed. Every month, Asian knotweed plants are ripped out and taken to a special compost heap. Salt is scattered over its roots to attack the rhizomes that allow it to spread. The presence of Asian knotweed on the riverside is the result of the introduction of infested soil during landscaping works and of the re-mobilisation of rhizomes during floods. Never throw a piece of Asian knotweed root into water or on land, as it could grow back again.