Bristol is the Japanese knotweed 'capital of England', new data from Environet shows. In the year to date, there have been 1,440 reported sightings of Japanese knotweed in the South West city, ...

For a highly invasive plant, Japanese knotweed looks unassuming. With green bamboo-like stems, spade- or heart-shaped leaves and, in late summer, clusters of white or pale green flowers, Japanese ...