If the leaves on your Peach trees are curling up and turning funny colors (shades of yellow, red, and purple), you probably have Peach Leaf Curl.

This is a caused by a fungus, and it may, or may not affect the fruit production on the tree. Once the tree shows symptoms, there is nothing that can be until the leaves drop in the fall. The time for treatment is between the time the leaves drop, and the new buds form in the Spring. During that time, a fungicide can be applied to get rid of the fungus.