Posted: 16/02/2013 at 16:55
Thank you for all your suggestions. Really helpful website Swiss Sue - especially the fact they include annual climbers, which I had not considered. Has to be a container as the shed I want to cover is a concrete one on the patio to the side of the house, so no soil available - also only receives morning sun. The container is large - a half barrel - so I am also going to look at clematis montana and clematis tangutica - will also check the annuals.
All your help much appreciated. Carol Mc