Fall is one of the most important times of year for your Texas lawn. The brutal heat of summer is finally backing off, the grass is still actively growing, and you have a window to do things that will directly affect how your lawn looks next spring. What you do — and don't do — between September and November matters more than most homeowners realize.

Why Fall Lawn Care Matters in Texas

Warm-season grasses like Bermuda, St. Augustine, and zoysia don't go dormant overnight. They gradually slow down as temperatures drop, and the health of the root system going into winter affects how quickly and fully the lawn recovers in spring. A lawn that goes into winter stressed, thin, or weed-infested is going to have a harder spring than one that was properly prepared.

Fall is also when winter annual weeds start germinating. Weeds like henbit, chickweed, annual bluegrass, and rescuegrass can take over a lawn during the winter months if pre-emergent isn't applied at the right time.

Fall Pre-Emergent: Don't Miss the Window

Fall pre-emergent application is one of the most time-sensitive tasks in lawn care. Winter annual weeds germinate in the fall as soil temperatures cool — typically when soil temps drop to around 70°F at a 2-inch depth. Pre-emergent has to be in the ground before germination happens. Once those weeds are up, pre-emergent won't help.

In Central Texas, the fall pre-emergent window typically falls between late September and mid-October, but it varies by year depending on when temperatures cool. Watching soil temperature rather than the calendar is more reliable than picking a fixed date.

Common winter weeds that fall pre-emergent targets include:

• Annual bluegrass (Poa annua)
• Henbit
• Chickweed
• Rescuegrass
• Lawn burweed (sticker weed)

Fall Fertilization: Proceed Carefully

Fall fertilization in Texas requires more caution than spring fertilization. The goal in fall is not to push aggressive new growth — it's to support root health and help the lawn store energy for winter. Pushing too much top growth late in the season with high nitrogen can produce tender tissue that's vulnerable to cold damage.

General guidelines for fall fertilization of warm-season grasses in Texas:

• Reduce or eliminate high-nitrogen applications as temperatures cool in October
• Potassium applications in fall can support root health and cold hardiness
• Stop fertilizing once the lawn is approaching dormancy
• Don't fertilize dormant or semi-dormant turf

If you're unsure whether your lawn needs fall fertilization, a soil test can help identify actual deficiencies rather than guessing.

Aeration and Top Dressing in Fall

Fall is a good time for core aeration on Bermuda grass lawns in Central Texas. Aeration relieves soil compaction, improves water and nutrient penetration, and helps reduce thatch. Bermuda grass recovers well from fall aeration because it's still actively growing enough to fill in the holes before going dormant.

Top dressing with compost after aeration can improve soil structure over time, add organic matter, and help level minor low spots. It's not a one-time fix — it's a long-term investment in soil health.

St. Augustine is more sensitive to aeration stress than Bermuda. If you have St. Augustine, consult with a lawn care professional before scheduling fall aeration.

Mowing in Fall

Continue mowing at the proper height for your grass type as long as the lawn is actively growing. Don't lower the mowing height in fall — cutting warm-season grass shorter going into winter can stress the turf and reduce its cold hardiness.

As growth slows and the lawn approaches dormancy, mowing frequency naturally decreases. Don't force it — mow when the grass needs it, not on a fixed schedule.

Irrigation Adjustments in Fall

Water demand drops significantly as temperatures cool and growth slows. Adjust your irrigation schedule to match actual conditions rather than running the same schedule you used in August. Overwatering in fall can contribute to disease pressure and waste water.

Before the first freeze, check your irrigation system for any issues — cracked heads, coverage gaps, controller settings — so you're not dealing with problems when spring arrives.

Leaf Management

Heavy leaf accumulation on a lawn can block sunlight, trap moisture, and contribute to disease. Remove or mulch leaves regularly rather than letting them pile up. Mulching leaves with a mower and leaving a thin layer is fine — a thick mat of wet leaves sitting on the grass is not.

Preparing for Winter Dormancy

As temperatures drop into the 50s consistently, warm-season grasses in Central Texas will begin transitioning toward dormancy. Brown color during dormancy is normal — it doesn't mean the grass is dead. Avoid heavy foot traffic on dormant turf, don't apply fertilizer to dormant grass, and resist the urge to do anything dramatic to the lawn until spring green-up begins.

Professional Fall Lawn Care in New Braunfels

Committed Lawn Care provides fall lawn care services throughout New Braunfels and surrounding Central Texas communities, including pre-emergent applications, fertilization, aeration, and top dressing. If you want to make sure your lawn is properly set up for winter and ready to come back strong in spring, we're here to help.

Call or text Committed Lawn Care at 512-222-9122.