I know this lime-sulfur chat is about peaches but I couldn’t find lime-sulfur and ended up using cueva +oil for the peaches and plain sulfur+oil for everything else. In case anyone else is trying to find an alternative.
Fungonil/bravo 720 is also recommended for peach leaf curl if you can find it.
The sulfur was powdered, from TSC. I also sprayed it with oil on my pears when they looked like this and that worked and didn’t hurt the tree (and I didn’t have mite problems).
I can’t believe I sprayed in late feb and early march last year! There’s snow on the ground right now and everything here is frozen solid!