Hi! I'm trying to improve my lawn, and I think my soil has a great deal to do with my lawn's many bare and thin spots. I have one area that is just gorgeous -- nice, thick, green bermuda. I have other spots that are a mixture of bermuda and fescue (mainly in shady areas) and other spots still that are so bare that when you look at the grown, there is only a little sprig of grass every inch or so. I live in north Alabama, where there is lots of red dirt. It's not clay, per se, at least not the sticky, malleable stuff I was used to growing up in Georgia -- the stuff you could literally form into a shape and stick in the kiln with barely any preparation! However, it's red, dry, and very very compacted, and as such, nothing will grow there. What can I add to the soil or do to it to make grass grow there (add sand, topsoil?), and can I do it this fall, or must I wait until spring?