Managing Brown Rot and Other Peach Tree Diseases

After a very wet summer caused peach rot and branch dieback last year, a grower noticed spots on this year's peaches, with one fruit showing brown fungal growth on its lower half.

Disease Identification

The symptoms suggest brown rot, a common peach disease exacerbated by wet conditions. Peaches and nectarines are challenging to grow in home gardens without an effective pest and disease management program. Common pests include tarnished plant bug, stink bug, oriental fruit moth, plum curculio, peach tree borers, Japanese beetle, green June beetle, and European red mite. Key diseases include peach leaf curl, brown rot, scab, bacterial spot, and powdery mildew.

Management Strategies

Ensure proper drainage—peaches need water but cannot tolerate standing water. Consider using a product like Atomic Grow to restore tree health. Implement a comprehensive spray program targeting both insects and diseases, beginning early in the season. Remove and destroy all mummified fruit and infected plant material to reduce disease pressure.