Photinia Leaf Spot

Photinia is very susceptible to the fungus leaf spot called Entomosporium that can defoliate photinia plants. New infections appear as tiny circular leaf spots that are darker red than the surrounding tissue. Older dead tissue, creates spots on photinia that have gray centers surrounded by a darker reddish halo. Heavy infections will cause premature leaf drop resulting in large bare areas. In the spring during wet weather, spores are released and are dispersed by splashing water and wind to infect new growth. Infection occurs continuously during periods of wet weather. Remove and destroy fallen leaves, prune off diseased twigs, and treat with a fungicide, every 7-14 days.