Sources: [1]
Planting dates
For a fall crop, Texas A&M gives three regional windows: mid-July to August in North and West Texas, late August to September in Central Texas, and October to November in South Texas. These are regional ranges, so do not copy one into another part of the state.
Texas A&M: Cole Crops, Path to the PlateYour region
Choose North/West, Central or South Texas before choosing a date. The Texas A&M guide makes the regional split part of the recommendation because cole crops need cool-season timing.
Texas A&M: Cole Crops, Path to the PlateHow to plant
Texas A&M recommends starting with good transplants and setting them about as deep as they were in their container. Most cole crops need 18 to 24 inches between plants and 36 inches between rows.
Texas A&M: Cole Crops, Path to the PlateA crop that needs attention
The Texas A&M guide describes cauliflower as one of the harder cole crops to grow. When the head is easy to see, gather the longer leaves over it for blanching; harvest the tight center head before it becomes open and loose.
Texas A&M: Cole Crops, Path to the PlateChoose your next step
You garden in North or West Texas
Plan the fall transplant in the mid-July-to-August range.You garden in Central or South Texas
Use your own region’s later range instead of borrowing the North/West schedule.You are choosing between seed and transplants
Use good transplants for the field window described by Texas A&M.Planting questions
Is cauliflower easy to grow in Texas?
Texas A&M calls cauliflower one of the harder cole crops to grow, so regional timing and transplant quality matter.
Texas A&M: Cole Crops, Path to the PlateHow far apart should cauliflower be planted?
Texas A&M lists 18 to 24 inches between most cole-crop plants and 36 inches between rows.
Texas A&M: Cole Crops, Path to the PlateWhen should I plant in South Texas?
Texas A&M gives October to November for a fall cole-crop planting in South Texas.
Texas A&M: Cole Crops, Path to the Plate