A new map has revealed the worst spots for damaging and invasive Japanese knotweed in the UK, that can ruin buildings and cause house prices to plummet.
Knotweed is native to East Asia and was introduced to the UK back in 1850 by German botanist Philipp Franz von Siebold — who was unaware of the impact the plant would go on to have on the environment.
The fast-growing weed is now "indisputably the UK's most aggressive, destructive and invasive plant", according to the Environment Agency.
