I'm still confused about the difference between climbing and rambling roses, and when to prune them. there was something recently on Gardener's World, but mine does nto really fit either category. It's a prolific red rose climbing over a pergola, and it flowers at least twice, so in theory it's a climber? it's very vigorous, and is hard to train over the rather delicate pergola frame. but it flowers for so long that i don't want to be without it. when shoudl i prune it? and how hard?