Generic lawn care calendars are written for average climates. North Texas is not an average climate. We get late freezes in March, 100-degree heat in June, drought that cracks the ground open by August, and then a second green-up window in the fall that most homeowners miss entirely. If you’re following a bag of fertilizer’s four-step program or a lawn care schedule written for the Midwest, you’re probably either working too early, too late, or both. Here is a calendar built specifically for DFW — covering Bermuda, St. Augustine, and Zoysia across every season.
Winter (December – February): Prepare, Don’t Neglect
Warm-season grasses are dormant in winter, but that doesn’t mean the lawn needs zero attention. This is the window for planning and early prevention.
- Pre-emergent for winter weeds: Henbit, chickweed, and annual bluegrass germinate in fall and keep growing through mild DFW winters. If you didn’t apply pre-emergent in October, spot-treat visible broadleaf weeds with a post-emergent now.
- Soil testing: Late winter is a great time to get a soil test done. Results help you plan fertilization and pH correction before the growing season starts.
- Equipment maintenance: Sharpen mower blades, inspect irrigation heads, and get everything ready before spring rush hits.
- No fertilizer: Dormant warm-season grasses can’t use nitrogen. Save it for green-up season.
Early Spring (March – April): The Most Critical Window
Spring is where the North Texas lawn care year is won or lost. Most homeowners move too fast in March — the lawn looks ready, but the soil isn’t warm enough yet. Wait until nighttime temperatures are consistently above 55°F before doing anything significant.
- Pre-emergent herbicide: This is the single most important spring application. Crabgrass, dallisgrass, and other summer annual grassy weeds germinate as soil temps hit 55–65°F. Apply pre-emergent before that window, typically late February through early March. Missing this by even two weeks opens the door to weeds that are extremely difficult to control once they’re up.
- Core aeration (Bermuda and Zoysia): Spring aeration after green-up encourages root development heading into the growing season. For St. Augustine, fall is the better aeration window.
- First fertilization at green-up: Once grass is 50% or more green and growing, apply the first balanced fertilizer. In North Texas, this is typically late March to early April for Bermuda and mid-April for St. Augustine.
Late Spring (May – June): Growth Mode
This is when North Texas lawns grow the fastest and the lawn care workload is highest. Grass is actively expanding, weeds are competing hard, and the heat hasn’t yet peaked.
- Second fertilization: A nitrogen-forward application in May keeps grass actively thickening before summer stress sets in.
- Post-emergent weed control: Any grassy or broadleaf weeds that got through pre-emergent get targeted now, while they’re young and easier to kill.
- Begin watering adjustments: As heat ramps up, shift from 3 days per week toward deeper, less frequent sessions. Bermuda handles this well. St. Augustine needs more consistent moisture.
- Mowing frequency increases: Expect to mow every 5–7 days. Bag clippings if you have heavy thatch accumulation.
Summer (July – August): Survival Mode
The goal in North Texas summer is keeping the lawn alive and minimizing stress damage — not pushing aggressive growth. This is not the time to fertilize heavily or try to fix problems that should have been addressed in spring.
- Hold off on nitrogen: Light iron applications maintain green color without forcing stress-vulnerable growth.
- Watch for chinch bugs: St. Augustine owners should inspect monthly. Brown patches that don’t respond to water are a red flag.
- Water deeply but infrequently: Two to three times per week, early morning. Avoid wet evenings that promote fungal disease.
- Raise mower deck: More blade height shades the soil, retains moisture, and reduces heat stress on the plant.
Fall (September – November): The Underused Recovery Window
Most North Texas homeowners check out in September because summer wore them out. That’s a mistake. Fall is actually a second major opportunity to improve your lawn before winter dormancy.
- Fall pre-emergent: Apply in late August to mid-September to prevent winter annual weeds from getting a foothold. This is the most overlooked application in the entire calendar.
- Fall fertilization: A potassium-forward application in September and a lighter nitrogen feed in October help warm-season grasses store energy for winter and come back strong in spring. Stop nitrogen for St. Augustine after October 15 to avoid frost-damage vulnerability.
- Aeration for St. Augustine: Early fall aeration gives St. Augustine roots room to expand before dormancy and helps with water infiltration through winter.
- Post-emergent broadleaf control: October and November are excellent timing for eliminating broadleaf weeds like clover, dandelion, and henbit while temperatures are mild.
The Year-Round Baseline: What Never Changes
Regardless of season, three habits make the single biggest difference in North Texas lawn quality:
- Never scalp: Keep St. Augustine at 3–4 inches, Bermuda at 1–1.5 inches, Zoysia at 1.5–2.5 inches
- Irrigate based on need, not schedule: Adjust for rainfall, temperature, and seasonal growth patterns
- Stay proactive on weeds: Pre-emergent twice a year prevents the majority of weed problems before they start
This is the framework behind our professional lawn care program — every application timed to the actual North Texas calendar, not a generic template.
For a deeper look at how summer specifically affects lawn color and health, see our post on why your lawn turns brown even when you water properly. Understanding the seasonal threats helps you know which problem to look for at which time of year.
Hamann Lawn Care has been following this calendar in Arlington and across DFW since 2006. If you’re tired of figuring out the timing yourself, we’ll handle the whole thing for you.