I have a pink mop-head hydrangea which was received as a potted gift plant about 8 years ago. Our townhouse yard is small and I need to keep it as compact as possible without losing all blooms. I prune it every year but never seem to get the amount and timing right, so it's either a good size (2.5-3'), with no flowers at all or too big (>4) with flowers on about 1/3 of the stems. I'm in Vancouver BC; when should I prune and how much? Do I prune flowering stems and leaf-only stems differently? Do I prune high now to allow for winter damage to branch tips, and prune lightly again in early spring?