I did some searching at the Texas Extension service site and found this list of when to plant.
I also found this.* You can click on the bottom for first and last expected frost dates for your area.
When you look for kale, check it under 'K' and not 'C'.
Enjoy your veggies.* :)
When weeding, the best way to make sure you are removing a weed and not a valuable plant is to pull on it. If it comes out of the ground easily, it is a valuable plant.