I planted 7 photinias this past March and I believe a few of them have root rot, as I live south of Houston and we had a very wet early summer. Any suggestions on how to nurse them back? One of them had all the leaves turn brown.
Certified GKH Gardening Expert
Prune your weak plants back and go easy on watering. You might find the following article helpful: https://www.gardeningknowhow.com/ornamental/shrubs/photinia/growing-red-tip-photinia.htm