Japanese knotweed
Introduced from Japan in the 19th century, Japanese knotweed is now an invasive weed of many riverbanks, waste grounds and roadside verges, where it prevents native species from growing.
Introduced from Japan in the 19th century, Japanese knotweed is now an invasive weed of many riverbanks, waste grounds and roadside verges, where it prevents native species from growing.
Paul tells us about his role at the beautiful Queenswood Arboretum