The peach trees I had growing up didn't need to cross pollinate. But I don't know if there are some varieties that do and some that don't.

I have had plum trees that did need to cross pollinate. However there are some grafted plum trees that don't need to cross pollinate because the tree is actually two different trees on one trunk. Don't know if they do that for peach trees or if peach trees just naturally self pollinate.

Here's an update of the Hollohas farm. This is half of it.