Hello, This past spring I planted a bare root Nanaimo peach tree in my backyard. I pruned it back to scaffolding branches when I planted it and it grew wonderfully. However, a few months ago when the weather was turning for fall, I noticed some sap oozing from the areas where I pruned off branches in the spring. I did not think much of it at the time. However, today I noticed some blackening near the branch collars of the scaffold branches and some sap in the crotch where a scaffold branch meets the tree. The crotches of the new growth from the spring do not show discoloration or oozing, only the original scaffold branches do. Are the changes in my tree normal damage from freeze and thaw cycles of winter or does my peach have a fungus/disease? The tree does not appear to have any dying branches and has set a lot of healthy looking buds for next year. I have attached some photos of my tree and what I have described. If this is a disease or fungus what are my best treatment options? I have been planning to plant 2 more peaches this spring, but now I am worried I need to rethinking this if they are just going to suffer infection from my current tree. Any advice you have would be greatly appreciated. Thank you.