Peach leaf curl - caused by a fungus.

yes, it is peach leaf curl. The only time you can treat it is during winter when the tree is dormant. Try: copper, or some other product for plc. It is quite common in humid areas. no worries...

The affected foliage will usually fall off and the tree will grow new leaves. It takes a lot of the trees energy and usually cuts the amount of fruit. It it easy to prevent by a proper spray schedule for your area. Al

plc... its too late. Fertilize and dispose of the leaves. Spray copper before they leaf out next year. Very common disease. Its worse when its cold and rainy.