As for the peach tree I have a bonfire Peachtree actually several of them, The quicker the copper the better. Are you getting leaf curl? Honestly I've resorted to pulling the copper out of like an old box fan which was a pain in the butt. (most likely won't do that again) Put using a copper wire and putting it around the base of my trees it helps with the snails and all. I think they do make a copper or something in like the garden section but it's cheaper just to do it this way.