You could have an arborist look at it. But normally it isn’t recommended to paint or wrap a wound like that. Just let the tree take care of it itself. It knows what to do and will heal over the wound.

I’m very new at Peach Trees. I rescued a few small plants from the woods out back in my property (my grandma had planted originally 60 yrs ago)No one really knew what all was back there, just “she planted some stuff ” They grew up fast as rockets and the second year i had “heirloom white peaches ” the size of softballs. We ate breakfast off the tree that year! I’ve had personal health problems and I have not been outside in a long while.Now my behemoth is overflowing with fruit and about 25ft tall. She’s broken a major branch! It’ about a week or two before ripened fruit and I am worried about what I have to do. If I trim the branches, do I paint the nub? Do I need to “bandage” it or something (obviously any wrapping would cause disease,rot, pests. But it’s a precious treat and tree to me and I can’t just not do something.

I do not have a post on it, but I did a video a few years ago. It is focused on apples but the same method will work for peaches:
https://youtu.be/FK365Dsfo5c

I don’t know anything about bagging fruit on the tree. Do you have a prior post on that? I’m in western SC and have already thinned my Elberta and Red Haven trees (2 of each) and they look really good so far.

It’s never too late to thin. Get some of that weight load off those branches so you don’t loose any more.

We bag our fruit so I don’t know much about spraying. You should contact your local extension agency and see if they have a spraying schedule.

HELP! Every year my peach tree is loaded with peaches. They look like bunches of grapes. They are about walnut sized and the branches are touching the ground. Can I still thin? We lost 3 branches last year because if the weight load. Also, what is the very best way, at this point, to make sure the bugs stay out if the peaches? I’ve been spraying weekly with orchard spray, but still see some peaches with the clear gummy spots. Makes me sad to get beautiful peaches with a worm living inside. :/
My plumb tree is in the same situation!
I know nothing about fruit trees.

Yes you do need to thin plumbs as well to a similar distance appart.

Should be okay, they will take a while to break down.