When is the best time to prune photinias? And, how much should be pruned. Mine is very tall.
Certified GKH Gardening Expert
Prune photinia sometime during early spring through early fall--late spring, early summer being the best time. Unruly plants can be cut back 6 inches to the ground and will come back--annual pruning will help keep them maintained and manageable. They can take a pretty severe pruning, so you can cut them back to a manageable size without harming them.