March is the time to plant beans according to Bob Randall at Urban Harvest. Here is the link:

Kathy

Here is a link that might be useful: When to plant Vegetables in Houston according to Urban Harvest

Maybe your county extension agent will have something. I know that the Travis county has a great site with a schedule. Try googling " your county name" county planting schedule. The Texas aggies put out a great schedule under AgriLifeExtension that I have lamented up and has been posted in my garden shed and lives in my seed box. I am Zone 8b

Here is a link that might be useful: Travis county Planting schedule