I would recommmend a good radio show/website for you. It's
www.dirtdoctor.com and Howard Garrett, dirt doctor, is on 660 am radio on Sunday mornings with an organic gardening show. His website is full of great info on gardening in north TX. I live in Arlington. What city are you in? I know the Dirt Dr's show is carried nationally too. If you want to know what to plant here, check out his website.
If you find any great nurseries in your area, I'd like to hear about them. I've had trouble finding good potting soil in Arlington. Finally found some at Marshall's Grain Co in Ft Worth. Lots of organic remedies there too.