Thank you Ron, I think it is Peach Leaf Curl as well. I read that the best way to treat it without chemicals is to pull off the effected leaves and also cover the tree top with a loose plastic bag so rain water cannot get in. So I pulled off the few leaves that have it, have not covered the tree though. What are your thoughts? My son and I planted this tree for arbor day two years ago, so it's very important for me that its healthy and continues to produce fruit.
Peach Leaf Curl is normally only a problem during cool, wet spring weather, of which we have an abundance in the PNW. It should be less of a problem in OK; so I'd expect that pulling off affected leaves would be adequate in your area. It will probably go away when the weather warms up.