Hello Lynne,

Thanks for reaching out to UVM Extension Master Gardener Helpline. Apologies for the delay.

We are looking into this and will get back to you as soon as possible. 

Hi Lynne, 

This is what came back from our plant diagnostics expert Ann Hazelrigg: 

This is peach leaf curl, an early season fungus disease of stone fruits. It will not rally harm the tree and by the time you see it is too late to do anything. https://www.missouribotanicalgarden.org/gardens-gardening/your-garden/help-for-the-home-gardener/advice-tips-resources/insects-pests-and-problems/diseases/fungal-spots/peach-leaf-curl#:~:text=Peach%20leaf%20curl%20is%20a,common%20diseases%20of%20these%20fruits.

Hope that helps.