Japanese knotweed is a large, herbaceous perennial plant, native to eastern Asia.

It now appears all over Britain since being introduced as a garden plant from Japan by the Victorians, causing millions of pounds worth of damage.

Japanese Knotweed is undisputably the UK's most destructive, aggressive and invasive plant.

It has been known to survive volcanic eruptions, so busting through your building foundations, patios, concrete and tarmac comes far too easily to this troublesome weed.