Texas Weed Challenges
Texas spans zones 7a (Panhandle) through 9a (Gulf Coast and Rio Grande Valley), creating dramatically different weed pressure depending on your location. Most Texas lawns are warm-season grasses (bermuda, St. Augustine, zoysia), which changes the herbicide calculus. Products safe for bluegrass may damage bermuda or St. Augustine. Always check the label for warm-season turf safety.
Dallisgrass is the weed Texans hate most. It’s a perennial grassy weed with no effective pre-emergent and no selective herbicide for bermuda lawns. It returns from the same root crown year after year and requires digging or spot-treatment with glyphosate.
Seasonal Weed Calendar for Texas
Late winter (February to March): rescue grass (a winter annual grassy weed unique to the South) is at peak growth. Henbit and annual bluegrass flower.
Late February to mid March: crabgrass germination begins when soil hits 55 degrees. In the Dallas/Fort Worth area, this is typically late February to early March, which is much earlier than northern states.
Summer (May to September): dallisgrass, nutsedge, doveweed, and spurge dominate. Texas heat stresses even warm-season lawns, opening gaps that weeds exploit.
Fall (October to November): best window for broadleaf treatment. Winter annual weed germination begins.
