Posted: 12/01/2014 at 17:20
Holly needs both sexes the rest don't.
If you have to prune a rowan do it in winter
Leycesteria can be cut right back to the base at the end of winter and will still come up and make flowers and berries,
Holly is traditionally pruned for christmas and doesn't seem to mind that.
I prune deciduous cotoneaster in winter and the evergreen ones when I get round to it