This introduction from Asia is fairly well distributed throughout England but is not as well known in Ireland, Wales or Scotland. It does seem to escape into the uncultivated or waste ground near gardens but unlike other members of this genus like Fallopia japonica (Japanese Knotweed) hasn't really made the status of nuisance weed. It isn't difficult to identify with its climbing habit and white flowers which come into bloom in mid summer.

Red Rocks marshes 28th June 2005

d on 30th October 2005, updated 14th January 2009, updated 30th March 2010