In message , Steve
writes
Hi,

can anybody tell me what this is please. It pops through the fence
from my neighbour's garden every year and I'm not sure whether to
encourage it or not.

http://i86.photobucket.com/albums/k8...edornot_11.jpg


Looks very much like Centranthus ruber - Red valarian
http://www.botanicalkeys.co.uk/flora...ecies.asp?1323

--
Robert