Avoid watering trees after October as this can reduce the winter hardiness of the trees. Brown rot is a serious peach disease. It can attack the blossoms and the developing or ripening fruit and even form cankers on small twigs. It must be prevented to ensure harvest of sound, good-quality fruit. Peach leaf curl.
Bacterial spot infects leaves, twigs and fruit.
As lesions on the foliage enlarge, their centers abscise, leaving a shot-hole appearance. Lesions on the fruit often become cracked and exude gum. Few peach cultivars are resistant to bacterial spot. By the time the symptoms of this disease are apparent, it is generally too late to control the disease on that year's crop. However, preventive sprays may be used early in the next season to protect the subsequent crop.