Hi I'm in the Ozarks too. Pulaski County Missouri. Here we grow Red clay, Sand, and Rocks. Topsoil is nearly nonexistent, but I'm hoping good dense cover crop and heavy mulching will be at least part of the answer. I'm also looking into soil biology, maybe the biology of nearby forested areas can increase the speed of topsoil production.
I joined the Master Gardeners, which is connected to the University of Missouri Extension Center, (
http://mg.missouri.edu/) so I could help local residents with their planting needs while I learned the local ecosystem and how to work with it. I am originally from Michigan, a land of abundant topsoil, and nearly zero rocks at least around where I was. So I have a very large learning curve.
I will try to bring my story here, or in a new thread as I go along.
Missouri Master Gardeners do like Comfrey! I was glad to hear that.