We planted a young peach tree this year and it has really filled out nice with lots of small peaches, but the peaches are seeping sap and then later fall off. What, if anything, can we do to prevent this?
This could be peach borers. They can attack either the branches or the fruit. This article will help if you have not read it: https://www.gardeningknowhow.com/edible/fruits/peach/peach-tree-borer.htm