Much of Texas has expansive clay soils. Make sure that your drainpipes are away from your houses foundation. I saw that you need to be careful of how you water everything to maintain a good balance between to much and to little water.
Has the concrete just cracked, or has it moved up and down? Some small cracks may not be a big deal, but shifting usually is. I would have a foundation company look it over and get a repair cost. It may not be as expensive as you fear. Or maybe, it is worse. You will only know once you have it checked out by those who can tell for sure.... more