J.K. - Growing through tarmacadam

J.K. - Easily grows through rubble walls

J.K. - Large riverbank infestation

J.K. - Plants can be spread from traffic

J.K. - Plants on vulnerable riverbank

J.K. - Spreading across mountainside

J.K. - New growth amongst old stems

J.K. - Derelict site completely infested

J.K. - Spreading into public domain

J.K. - Spreading through stone wall

J.K. - Riverside plant in autumn

J.K. - Riverside infestation

J.K. - Plant entering senescence

J.K. - Typical stem & leaf shape

J.K. - Typical leaf profile

J.K. - Large infestation along roadside

J.K. - Canes from previous growth

J.K. - Growing through boundary wall

J.K. - Growing through stone wall

J.K. - Folliar spraying a dense stand

J.K. - Growing under boundary wall

J.K. - Aggressive growth in urban area

J.K. - infestation on woodland fringe

J.K. - Riverside infestation in flower

J.K. - New shoot growing from cut stem

J.K. - Extensive roadside infestation

J.K. - Easily spread by passing vehicles

J.K. - Leaf of Giant Knotweed hybrid

J.K. - Leaf of Hybrid Giant Knotweed

J.K. - Easily spread on country roads

J.K. - Bank erosion causes spread

J.K. - Bank erosion, plant in foreground

J.K. - Downstream side of river bridge