Post here if you have disease problems on deciduous trees, evergreens, or ornamental trees like dogwoods or crape myrtles
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Each spring after budding, the trees (Cleveland Pears), develop a spot that will progressively invade and cause the leaf to die. New growth will occur later in the season. It is not patchy and affects the whole tree. I do not know if fire blight disease accurately discribes the condition, as it looks like a brown spot. What can I use or do I need to take the leaf to a garden center or Bartlett?
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Luckily, Cleveland pears are relatively resistant to fire blight. This problem sounds like a leaf spot fungal disease, perhaps Entomosporium leaf spot. This disease is best controlled by practicing good sanitation in the garden. It is important to rake up all fallen leaves throughout the season, especially in the fall. Fungal spores overwinter in this leaf litter and will reinfect the trees next year if not raked up and removed from the area. It is best to dispose of these leaves in the trash rather than putting them in the compost. Many compost piles do not get hot enough to kill the spores.
Since your problem seems to occur every year, a fungicide application may be necessary. Bonide Fung-onil or Bonide Infuse can be applied according to the label directions.