North Texas lawns don’t take a vacation — and neither does the grass trying to take over yours. Between our blazing summers, surprise freezes, and the relentless march of weeds that somehow thrive in every season, keeping a healthy lawn here is a year-round commitment. The good news? When you follow the right schedule, the work gets predictable, and the results get spectacular.
This guide covers everything — from the first pre-emergent app in February all the way through the quiet dormant months of winter — so you know exactly what your St. Augustine, Bermuda, or Zoysia lawn needs and when it needs it. Our professional lawn care services are built around this exact calendar, dialed in for North Texas conditions.
Early Spring (February – March): Wake the Lawn Up Right
February is when most homeowners are still thinking about the Super Bowl, but your lawn is already gearing up. Soil temperatures in North Texas start nudging toward 55°F in late February — and that’s the magic number when crabgrass and other grassy weeds begin to germinate.
Pre-emergent herbicideis the single most important application of the year, and timing is everything. Apply it too late, and the crabgrass has already sprouted. Apply it too early, and it breaks down before peak germination. Professionals monitor soil temp data closely so the window isn’t missed.
- Pre-emergent herbicide — stops crabgrass, goosegrass, and annual bluegrass before they sprout
- Light starter fertilizer — a gentle nitrogen push as Bermuda and Zoysia break dormancy; hold off on heavy feeding until soil is consistently warm
- Scalp and clean up — mow St. Augustine low once to remove dead material and let sunlight reach the soil
One mistake to avoid: fertilizing too aggressively while the grass is still dormant or semi-dormant. You feed the weeds, not the lawn. Patience in February pays off all summer.
Late Spring (April – May): Green Up and Push Out Weeds
By April, soil temps are solidly in the 65–70°F range and your warm-season grasses are actively growing. This is prime time for a second fertilizer application— a full nitrogen treatment that fuels aggressive green-up and thick, dense turf that crowds out weeds naturally.
Any broadleaf weeds that snuck through (dandelions, clover, oxalis, spurge) get hit with a post-emergent broadleaf herbicide now. Spot-treating is fine for light infestations; broadcast application handles heavier pressure. Either way, late spring is your best window because weeds are young, actively growing, and most vulnerable to treatment.
- Balanced or high-nitrogen fertilizer — supports rapid canopy fill and color
- Post-emergent broadleaf weed control — kills existing weeds without harming warm-season turf
- Watering check — set your irrigation to 1–1.5 inches per week as temps climb
May is also a good time to assess bare spots from winter stress or disease. Sod patches or overseeding Bermuda thin areas now gives the grass the full summer to establish before fall stress begins.
Summer (June – August): Survive the Texas Heat
Let’s be real: North Texas summers are brutal. Triple-digit heat, weeks without rain, and the kind of humidity that makes everything feel like a sauna. Your lawn’s primary goal in summer is tonot die— and with the right support, it won’t just survive, it’ll look great.
Heat stress management is about deep, infrequent watering rather than daily light sprinkles. Train roots to go deep by watering to a depth of 6 inches, two to three times per week. Shallow watering creates shallow roots, and shallow-rooted lawns crisp up fast when the heat spikes.
- Grub treatment (June – July)— white grub larvae from June beetle and Japanese beetle eggs are hatching and feeding on roots. A preventive insecticide applied in early summer stops them before damage shows up as brown, spongy turf patches in August.
- Iron supplements— when it’s too hot to push nitrogen without burning the lawn, chelated iron keeps the color deep green without stimulating excess growth. Works beautifully on St. Augustine.
- Raise mowing height— cut St. Augustine at 3.5–4 inches, Bermuda at 1.5–2 inches. Taller grass shades the soil, retains moisture, and reduces heat stress.
- Minimal herbicide— avoid post-emergent herbicides when temps exceed 90°F. Stressed turf is vulnerable to chemical burn.
Fall (September – October): Set Up Next Year’s Win
Fall is arguably the secondmost important treatment window of the year — and it’s the one homeowners most often skip. Soil temperatures drop back into that 70°F range in September, which means winter weeds (poa annua, henbit, chickweed) are getting ready to germinate.
A fall pre-emergent herbicideapplication in September stops those winter weeds cold. Without it, you’ll spend February staring at a lawn full of poa annua — that pale, clumpy annual bluegrass that makes Bermuda look terrible in dormancy.
- Fall pre-emergent (September)— the line of defense against poa annua, henbit, and chickweed
- Winterizer fertilizer (October)— a potassium-heavy blend that strengthens cell walls, improves cold hardiness, and stores carbohydrates in the root zone for spring energy. This is the application that makes your lawn green up faster in February.
- Aeration (optional but recommended)— core aeration in fall reduces compaction and improves water and nutrient uptake heading into winter
As we discuss in our post on spring lawn treatments being the most important application of the year, how well your lawn performs in spring is largely determined by what you did (or didn’t do) the previous fall. The winterizer and fall pre-emergent are the setup shots.
Winter (November – January): Rest, Plan, and Don’t Overdo It
Your warm-season turf goes dormant once soil temps consistently drop below 50°F. Bermuda turns tan. St. Augustine goes grey-brown. Zoysia quietly checks out. This is normal and healthy — don’t panic.
The biggest winter mistake? Treating a dormant lawn like it’s a sick lawn. Applying nitrogen fertilizer to dormant turf is wasteful at best and damaging at worst. Herbicide applications on dormant grass can also cause injury when spring green-up begins.
- Mow as needed — less often, but keep it tidy if winter weeds are growing
- Monitor for winter weeds — if poa annua or henbit appear despite your fall pre-emergent, spot-treat with an appropriate post-emergent in mild temperatures
- Adjust irrigation — dormant lawns need far less water; reduce to once per week or less depending on rainfall
- Plan for spring — review your program, book your early spring pre-emergent appointment early (February slots fill up fast)
Why Professional Scheduling Beats DIY Guesswork
The calendar above looks straightforward on paper, but execution is where most homeowners run into trouble. Soil temperature — not the date on the calendar — is what actually drives timing decisions. A warm February might push pre-emergent application up two weeks. A cool spring might mean holding off on heavy fertilizer into May. A dry summer affects herbicide efficacy windows.
Professional lawn care programs account for all of this in real time. We’re monitoring local soil temp data, tracking weather patterns, and adjusting application windows to match actual conditions rather than a generic month-by-month grid. We also know which products work best for each grass type and which weed pressures are heaviest in your specific area of North Texas.
The result: fewer missed windows, less wasted product, and a lawn that performs better all year long — without you spending your weekends trying to decode fertilizer bag math or wondering if it’s too hot to spray.