I live in the foothills of the Ozarks. Our soil is hard clay & shale. Very rocky.... Over 2 years, I have added humus and lots of homemade compost which I have tilled into the soil. My garden isn't huge (20 ft x 20 ft) but the soil condition has VASTLY improved from the first year. I'm just sayin'.....don't give up! It is possible to make it better.I suppose it's normal to change with advancing age so i quit doing it the difficult way . Now i determine in the fall where i will plant a few peppers and tomatoes , dig holes in those locations and that's where all compost-able veg scraps go during the winter . Each time i add a small amount of compost-able it gets a small amount of soil added on top . When spring arrives those holes are already fertilized and willing to accept new plants . We have moved from a property with excellent sandy loam gardening soil to a property with hard clay so i'm looking forward to seeing what that method will do .