This introduction from America is very happy in shade and produces plenty of seed helping it to spread from the gardens where it undoubtedly starts. It is quite a common escape in the North West of England and in Southern central England but dotted about elsewhere with only small colonies in Ireland.

Deep in shade of dune woodland, Birkdale Sand Hills, Southport 9th May 2006

Added on 18th May 2006, updated 14th February 2012