How a 6-Application Annual Lawn Program Works in North Texas

Most DFW homeowners who try to manage their own lawn treatments end up with one of two problems: they either spray reactively — only when they see weeds — or they follow a generic national schedule that was never designed for the North Texas climate. Both approaches consistently underperform. A structured 6-application annual program solves both problems by distributing the right treatments at the right times across all four seasons, building on each previous visit. Hamann’s weed control and fertilizer program is structured exactly this way, and here’s what each round is doing for your lawn.

Why Six Applications and Not More or Fewer?

The number isn’t arbitrary. North Texas warm-season grasses — Bermuda, Zoysia, St. Augustine — have distinct growth phases tied to soil temperature, day length, and rainfall patterns that play out across roughly six windows throughout the year. Each window has specific weed pressure, specific nutrient needs, and specific opportunities for preventive treatment. Fewer than six visits means you’re leaving gaps where weeds germinate unchecked or turf goes unfed at a critical growth moment. More than six, on most properties, is diminishing returns — you’re re-treating ground that’s already covered.

Round 1: Late Winter Pre-Emergent (February–March)

The year kicks off with a spring pre-emergent application targeting summer annual weeds. Crabgrass, goosegrass, spurge, and annual sedges are all waiting in the soil as seeds, ready to germinate when soil temps climb above 55–60°F. The spring pre-emergent creates a chemical barrier before that happens. In DFW, the window for this application is typically mid-February through mid-March — apply too late and the seeds beat you to it. This round may also include a light nitrogen starter to nudge the turf out of dormancy once soil temps are consistently rising.

Round 2: Spring Fertilization and Broadleaf Weed Control (April–May)

By April, warm-season turf is greening up and actively growing. This is the window for the first significant nitrogen application of the year — feeding the turf as it shifts into high gear. It’s also when broadleaf winter weeds that survived the fall pre-emergent (or germinated in areas where coverage was thin) are large enough to target with post-emergent herbicide. A professional-grade broadleaf application now wipes out henbit, clover, dandelion, and oxalis while the turf is actively competing and recovering quickly from treatment.

Round 3: Early Summer Fertilization and Weed Touch-Up (June)

Summer in North Texas is high-growth season for Bermuda. This round delivers a mid-cycle nitrogen boost to sustain the rapid growth and color the turf produces in June before heat stress sets in. It also addresses any summer annual weeds — crabgrass escapes, spurge, sandbur — that slipped through the spring pre-emergent barrier or emerged in high-traffic areas where soil disturbance broke the chemical film. The right nitrogen formulation here is important: a slow-release product applied in June feeds through the summer without burning stressed turf.

Round 4: Midsummer Treatment (July–August)

This is often the most overlooked round on DIY programs. The logic seems like nothing is happening because the lawn looks fine — but summer annual weeds are at their most aggressive in July and August, and they set seed rapidly. Letting them go untreated now means a dramatically worse weed problem next spring. This round is primarily a weed management visit: targeting summer annuals before they mature and seed, assessing for any signs of disease or insect pressure that could be confused with weed or fertilizer problems, and adding a modest potassium supplement to support heat and drought stress tolerance.

Round 5: Fall Pre-Emergent and Fertilization (September–October)

This is the most important round of the year, and the one that most profoundly affects how the lawn looks all winter and how fast it greens up next spring. The fall pre-emergent targets winter annual weeds — henbit, annual bluegrass, chickweed, bittercress — before they germinate as soil temps drop. Paired with a potassium-rich fall fertilizer, this round builds root depth, cold hardiness, and the carbohydrate reserves that fuel spring green-up. Everything about a successful winter weed program flows back to this October application.

Round 6: Winter Weed Cleanup (November–December)

The final visit of the year is a quality-control round. Any cool-season weeds that germinated in spots where the fall pre-emergent coverage was thin get spot-treated post-emergent before they can establish and set seed. The technician assesses overall turf condition, checks for bare patches that may need attention come spring, and documents anything unusual for the first visit of the following year. This round is what keeps the lawn looking clean and weed-free through the dormant season rather than turning into a henbit field by February.

How the Rounds Build on Each Other

The key insight is that each round creates the conditions that make the next round more effective. The fall pre-emergent sets up a clean winter. A clean winter means less weed seed pressure in spring. The spring pre-emergent closes that gap. Strong spring fertilization builds the turf density that naturally crowds out summer weeds. And so on. Skip one round and you create a gap that the next round has to work harder to close — which is the exact challenge a missed winter treatment creates going into spring.

What This Looks Like for Your Specific Lawn

The six-round structure is the framework, but the specifics vary by grass type, soil condition, and what’s actually happening on your property. Bermuda in full sun gets a different fertilizer rate than St. Augustine in part shade. A lawn that had heavy crabgrass pressure last summer gets more attention on the spring pre-emergent round. A property with irrigation runs differently than a dryland lawn. Professional programs adjust within the framework based on real observations at each visit — which is something no generic schedule can replicate.

• Round 1: Late winter pre-emergent + light starter fertilizer (Feb–Mar)
• Round 2: Spring nitrogen + broadleaf weed control (Apr–May)
• Round 3: Early summer fertilization + crabgrass/summer weed cleanup (Jun)
• Round 4: Midsummer weed control + potassium stress support (Jul–Aug)
• Round 5: Fall pre-emergent + potassium winterizer (Sep–Oct)
• Round 6: Winter weed cleanup + turf assessment (Nov–Dec)