Posted: 08/03/2014 at 19:32
Photinias do drop a lot of leaves throughout the year, in my experience. They dont seem to like too much wind either or too much moisture. For me they are temperamental plants.
In late spring ...after the new growth turns to green....I pinch shoots back to encourage new red growth. Oftentimes I repeat this in mid summer too.
I domt think it's a nutrition thing...I think it's a physiological thing, a term I think covers a range of issues without actually naming one. I have a sense that they probably do better as a hedge than as a sIngle specimen plant perhaps preferring the added protection !
Photinias like to grow tall, to jettison their lower branches, so regular pruning should help.