Peaches? We don't need no stinking peaches! Seriously? OK. Peaches are pretty tough and water is not going to break down the wall much. I'd just go ahead and put in straight in the soil. That's what mother nature does. The wall is thick so it passes thru an animals digestive track with no contamination. Plant it point side up about an inch below the surface in full sun. The combination of soil, sun and water should yield you a tree. Not much to it really.
out.