Posted: 11/05/2013 at 17:48
Sorry I disagree. I would prune now.
I prune my Photinias at least twice in summer too. They are quick to produce new shoots and by pruning back to a pair of buds on each stem you will double up on those lovely red shoots in a few weeks.
I think the secret with Photinias is to prune when young to create a dense bushy plant. Photinias naturally want to grow tree like and to jettison lower leaves.
You can prune hard....not to be afraid of doing so..but a leggy photinia is an ugly sight I think. After pruning I feed and water well