DO NOT spray copper on peaches!! TRy spraying Daconil.
Hey Rob. Do you think its a coincidence that I sprayed them with copper for the first time last week?!! Could this be spray injury or both?
I dont think it is the cause of your problems. Even though copper is considered ok to spray on peaches, I have seen applications of copper cause damge to peach vegetation, even going so far as to defoliate the peach. This is why I am recommending Daconil.