This week's to-do list from Neil Sperry's email newsletter (February 15th):
"Deep South Texas apply pre-emergent granules Dimension, Halts, or Balan to prevent germination of crabgrass and grassburs. Repeat 90 days later for full season of control. These are safe on any type of lawngrass. In Central Texas your time will come first two weeks of March. Far North Texas apply last two weeks of March. These pre-emergent products must be applied before weed seeds germinate."