It's Peach Leaf Curl, my Spice-Zee gets it even with dormant spraying, and continues to get a little all season long. Of al my peaches/nectarines, it is the 2nd most vunerable, only Flordaprince is a worse Curl magnet. You have to keep after it yearly or it will debilitate the tree until it dies.

Carla in Sac

A couple of possibilities. If the leaves have red dots and raised spots, it is Peach Leaf Curl. You'll have to spray for it.

If some of the leaves are crinkly, it could be aphids. You have to spray for that, too.

Yup. It is Peach Leaf Curl - a fungus that's everywhere. Hit with a sulphur or copper fungicide once or twice during the dormant season. The last spray just before buds open.

Too late to do anything this spring or summer.

thnks!