I have a potted dwarf rosebush that I trimmed heavily last October. It seems to have appreciated it, becuse it's growing back strongly, and turning a dark, lush green during the remarkably early and sunny spring we're having here. Its new leaves are so dense that I'm tempted to trim it again a little. My wife says this is a bad idea and plants shouldn't be pruned in spring. But it's already so dense that the leaves in the centre of the bush are receiving very little light, so are largely pointless, but still consume resources that could go into growing flowers. As you might guess from my name, my passion is in cacti, and I don't know much about roses. Could anyone advise me please?