There is a disease called Red Tip Photinia and it is related to leaf spot disease.

Red tip photinia produces bright red evergreen leaves that change to green after a few weeks.Red tip photinia is hardy in the U.S. Department of Agriculture.

Plants can reach up to 20 feet high and 8 feet wide.It is most likely that your photinia is experiencing some form of disease.Quick treatment can help restore it to a healthy state.Wear protective gloves and goggles to keep children and animals away from the area, and don't spread it on windy days to prevent it from spreading elsewhere.

There are small red spots on the leaves of photinia, which is a common problem.There are rings around the edges of older plants that have larger, dark red, brown or gray spots.The leaves fall off as the disease progresses.Pruning off all diseased tissue with shears during the winter is a good way to clean up the plant bed.

The shears should be dipped in rubbing alcohol before and after use.Take care of the plant's bottom branches.Don't applyfertilizer at the end of the growing season and wet the foliage while watering.In extreme cases, spray the plants thoroughly with a pre-mixed multi-purpose fungicide.It's best to do this once a week until the signs are gone.

It is a red tip disease.It produces symptoms in the spring when a pale brown watery substance from cankers on the wood is exposed to the air.The leaves, stems, flowers, and twigs are blackened.The interior wood is brown.Pre-mixed copper sprays are used in place of fungicides in cultural control.When the flowers are open, apply it to them until they start to bloom, and then apply every four or five days for the rest of the season.

There is a white powdery substance on the leaves and other plant parts of photinia.Slow leaf growth is caused by it.It's best to have shade and temperatures between 60 and 80 degrees.Keeping the plant bed clean and keeping the foliage dry are some of the effective control methods.You would apply the fungicide the same way you would control the leaf spot.