We moved to TX last year and bought a new construction home with a newly laid St. Augustine yard. We have watered about 3x per week for 30min. and added fertilizer. Our yard has slowly died right before our eyes. It went from green, to dry looking green (no matter how much water it got), to brown, to dead. We don't want to lay new sod until we know what went wrong, so it doesn't happen again. Sadly, our neighbors yard, who was built at the same time still looks green. The soil underneath is hard some form of clay that is hard as a rock now. Does anyone know what to do???