South Central region · warm-season lawns
Dallas is warm-season grass country with a colder, drier edge than people expect. You are in USDA zone 8b (about 15 to 20F average annual minimum on the 2023 map, with the far northeast metroplex slipping into 8a), under a humid-subtropical (Cfa) climate, but "humid subtropical" undersells the swings here. July and August average highs sit near 96F and bake the soil hard, while January lows average around 36F and a hard arctic outbreak can drop you into the single digits or below zero, the kind of cold that browns or even kills tender St. Augustine. Rainfall runs only about 37 inches a year, with soft spring and fall peaks and a brutal dry stretch July through September, so summer irrigation, not rain, is what carries your lawn. The defining factor underfoot is Blackland Prairie black clay, an expansive montmorillonite "black gumbo" that cracks wide open when dry and seals airtight when wet, draining poorly either way. It is also alkaline (pH ~7.5 to 8.0), which chemically locks up iron and yellows lawns between the leaf veins (iron chlorosis) no matter how much nitrogen you throw down. Plan around the clay and the pH first; the grass choice follows from there.
For take-all root rot, the disease that hollows out St. Augustine lawns on Dallas's high-pH clay, Texas A&M AgriLife Extension recommends a soil practice most homeowners never hear: topdress with sphagnum peat moss, roughly one 3.8-cubic-foot compressed bale per 1,000 square feet, split into a spring and a fall application (two thin ~1/2-inch passes rather than one heavy one). Sphagnum peat runs around pH 4.4, and the take-all fungus hates that acidity right at the stolon-and-root zone where it attacks. For bermudagrass, the same Extension caps any single nitrogen feeding at 0.5 to 1 lb of N per 1,000 sq ft and tells you to wait for soil to hit about 65F (typically late February into March here) before the first feeding, totaling roughly 3 to 5 lb of N per 1,000 sq ft across the growing season (more on high-input, frequently-mowed lawns).
Picked for Dallas's climate and soil. Tap any grass for the full growing guide.
The default Dallas lawn and the right call for any full-sun yard. Bermuda thrives on the heat that cooks other grasses, shrugs off the July dry spell on deep roots, and takes the foot traffic of kids, dogs, and parties without thinning. Its honest tradeoffs are that it goes fully dormant and tan from roughly Thanksgiving to mid-March, it needs full sun (it limps and thins under tree shade), and it spreads aggressively into beds, so it needs edging. It is also the hungriest grass here, wanting about 3 to 5 lb of nitrogen per 1,000 sq ft a year (more on high-input, frequently-mowed lawns).
Read the Bermudagrass guideThe premium choice for a dense, fine-textured lawn that crowds out weeds. Zoysia tolerates a bit more shade than bermuda (a few hours less direct sun is fine) and feels plush underfoot, while still handling Dallas heat and the alkaline clay. The catch is patience and money: it establishes slowly (sod or plugs, not seed for the good cultivars), costs more up front, and on our heavy black clay it is the grass most prone to large patch, the cool-weather form of brown patch, in fall and spring. It also browns out in winter like all warm-season grass here.
Read the Zoysiagrass guidePick this only if you have meaningful tree shade, because it is the most shade-tolerant warm-season grass and the one option for the dappled light bermuda cannot handle. In Dallas it is a calculated gamble, not a default: our alkaline clay is exactly the soil take-all root rot loves, chinch bugs hammer it in hot dry spells, and a true arctic freeze can brown or kill it where the same cold barely fazes bermuda. If you grow it, manage the soil (see the peat-moss practice above) rather than just spraying fungicide. Raleigh and Palmetto are the cultivars to look for.
Read the St. Augustinegrass guideThe native, low-input wildcard for a sunny, low-traffic yard where you want to mow and water as little as possible. Buffalograss evolved on exactly this alkaline Blackland Prairie soil, so the high pH that yellows other lawns does not bother it, and it survives on a fraction of the water once established. The tradeoffs are real: it does not tolerate shade, it is thin and clumpy under heavy foot traffic, it can be invaded by bermuda and weeds in a fertilized, irrigated yard, and improved cultivars like Prestige or Density are best from sod or plugs. Great for a back acre, not a play-hard front lawn.
Read the Buffalograss guideIn North Texas the 2-inch soil temperature climbs past 55F much earlier than up north, usually mid-February to early March, and crabgrass starts germinating the moment it does. If you wait for the grass to green up, you are already late. A second pre-emergent in September to October catches henbit and annual bluegrass (Poa annua) before winter.
Dallas sits on Blackland Prairie "black gumbo," an expansive montmorillonite clay that cracks open in summer drought and seals into a slick, airless mat when it rains. Its alkaline pH (~7.5 to 8.0) ties up iron, so lawns yellow between the veins (iron chlorosis) even when nitrogen is fine. That same high pH is exactly what take-all root rot loves, which is why St. Augustine in shaded, alkaline yards is the lawn that mysteriously thins out every spring.
Twelve months tuned to our local season. Grouped by what the lawn is actually doing.
Dormant season. The lawn needs little, but Dallas winters swing dry and warm between cold fronts, so if you go several weeks without rain during a mild spell, water deeply once to keep the root zone and the clay from cracking and drying out. Keep foot and vehicle traffic off dormant turf. Use the downtime to plan next year: order a soil test if you have not, and mark mid-February on the calendar for the pre-emergent that decides your weed year.
Your warm-season lawn is fully dormant and tan, and that is normal, not dead. Stay off frosty, brittle grass to avoid crushing crowns. Use the slow month to service the mower, sharpen the blade, and read your soil test so you know whether you are fighting the typical pH ~7.5 to 8.0. If a dry, warm, windy stretch runs more than a few weeks, give the lawn one deep watering to keep roots and the clay from desiccating.
This is the month Dallas lawns are won or lost on weeds. Watch the 2-inch soil temperature, and when it approaches 55F (often mid-to-late February here), put down your spring crabgrass pre-emergent before it warms further. Our /tools/soil-temperature tool pulls your local readings so you hit the window instead of guessing. Do not fertilize yet; the grass is still dormant and would only feed weeds.
Average last light freeze lands around March 12, so green-up begins mid-to-late month. If you missed February, get the pre-emergent down early March at the latest. Once soil holds near 65F and the lawn has fully greened up (usually late March), bermuda can take its first nitrogen feeding at no more than 0.5 to 1 lb of N per 1,000 sq ft. If you grow St. Augustine, do the first spring peat-moss topdressing now to get ahead of take-all root rot.
Peak green-up. Watch for take-all root rot in St. Augustine showing as yellowing, thinning patches with rotted roots that pull up easily; this is a soil-pH problem, so lean on the peat-moss practice over fungicide. Spot-treat dallisgrass and any crabgrass that broke through with a post-emergent. Resume mowing at the right height: about 1 to 2 inches for bermuda, 2.5 to 3.5 for zoysia, 3 to 4 for St. Augustine. Plan any new sod for late April into May once frost risk is gone.
Full growing season. This is the single best month to install bermuda or zoysia sod, plug buffalograss, and to aerate the heavy Blackland clay so it stops sealing shut; our /tools/aeration-calculator sizes the job. Fertilize on schedule, and if the lawn yellows between the veins despite feeding, that is iron chlorosis from the alkaline soil, so apply chelated iron (a foliar iron product) rather than more nitrogen. Mow weekly as growth takes off.
Heat and the dry season arrive together. Shift watering to deep and infrequent, about 1 inch a week in one or two soakings, early morning, to push roots down through the clay; /tools/watering-schedule turns that into actual runtimes for your sprinklers. Scout St. Augustine for chinch bugs in the hottest, driest, sun-baked strips near sidewalks and driveways, where they show first. Apply the summer round of bermuda nitrogen, again capped at 0.5 to 1 lb of N per 1,000 sq ft.
Peak heat (highs near 96F) and minimal rain. Watering discipline is everything now; let the lawn tell you it is thirsty (footprints that stay, a bluish-gray cast) rather than overwatering the clay into a soggy, disease-prone mat. Raise the mower a notch to shade the soil and conserve moisture. Watch for the first white-grub damage and for fall armyworms, which can strip a lawn in days once they march in. Keep an eye on fire ant mounds and treat individually or with a broadcast bait.
Still hot and dry; protect what you have. This is prime fall armyworm season, so scout at dawn or dusk for the marching larvae and treat fast if you see chewed, ragged blades spreading across the lawn. Do the late-summer bermuda feeding early in the month so the grass has time to use it. If chinch bugs hit your St. Augustine, treat the infested zone and water it through the stress. Avoid heavy nitrogen on St. Augustine now, since it can feed gray leaf spot.
Growth is still strong but nights begin cooling. Put down your fall pre-emergent now (September into early October) to stop cool-season weeds (henbit and annual bluegrass) before they germinate; /tools/herbicide-timing pins the date. Give bermuda its last nitrogen feeding of the year early in the month; feeding later pushes tender growth into freeze risk. Do the second annual peat-moss topdressing on St. Augustine lawns to keep take-all suppressed through fall.
Cooling weather brings the cool-season form of brown patch (large patch), which shows as expanding circular yellow-to-brown rings, especially in St. Augustine and zoysia on the damp clay. Cut back evening watering so the canopy dries before nightfall, and treat with a labeled fungicide if rings spread. If you missed the September pre-emergent, get it down now. Keep mowing as long as the grass is actively growing; do not scalp it heading into dormancy.
First frost typically lands mid-to-late month (around Nov 14 to 20), and the lawn slides into dormancy and turns tan. Do a final mow, drop the bermuda height slightly to reduce winter thatch and matting, and rake or mulch fallen leaves so they do not smother the crowns over winter. No nitrogen now. A potassium-focused (winterizer) feeding earlier in fall is the only feeding that helps cold hardiness; skip it if you missed the window.
The issues we see most on local lawns, and how the timing works here.
When grass goes yellow-green with darker green veins despite plenty of nitrogen, you are seeing iron chlorosis, not a feeding problem. Dallas's calcareous Blackland soil at pH ~7.5 to 8.0 chemically locks up iron so roots cannot take it up. Do not respond by piling on more nitrogen, which only worsens it. Spray a chelated iron product (foliar iron) for a fast green-up that lasts weeks. On our calcareous Blackland clay the free lime buffers pH right back up, so trying to acidify the whole lawn with elemental sulfur is slow, costly, and usually not worth it; plan on iron as an ongoing maintenance treatment rather than a one-time pH fix. Confirm with a soil test before chasing it, since heat stress and grubs can mimic the color.
TARR is the classic Dallas St. Augustine killer because the fungus thrives in exactly the alkaline, high-pH clay we have. It shows up in spring as yellowing, irregular thinning patches where the grass pulls up easily because the roots have rotted off short and brown. Fungicides alone rarely fix it. The Texas A&M AgriLife Extension fix is to topdress with sphagnum peat moss (about one 3.8-cubic-foot bale per 1,000 sq ft, split spring and fall), because peat at roughly pH 4.4 acidifies the stolon-and-root zone the fungus attacks. Pair that with avoiding excess nitrogen, mowing at the proper height, and watering deeply but infrequently so the surface dries.
In July and August, watch for irregular patches of St. Augustine that turn yellow then straw-brown and keep expanding, usually starting in the hottest, sun-baked strips along sidewalks, driveways, and south-facing edges. That pattern, in heat and drought, points to chinch bugs, not just dry grass. Confirm by parting the grass at the green-brown margin and looking for small black-and-white insects at the soil line. Treat the infested area and a buffer around it with a labeled insecticide, water the stressed turf to help it recover, and keep thatch down, since heavy thatch shelters them. Bermuda and zoysia are far less prone, which is one more reason St. Augustine is a shade-only choice here.
Our spring soil warms past the 55F crabgrass-germination threshold weeks earlier than northern cities, often mid-to-late February, so the single biggest weed mistake here is putting pre-emergent down too late. Apply your crabgrass pre-emergent in mid-February to early March, before green-up, and a second pre-emergent in September to October for cool-season weeds. Dallisgrass is the tougher cousin: a clumping perennial that pre-emergents barely touch, so spot-treat established clumps with a post-emergent labeled for it (repeat applications are usually needed) and keep the lawn dense and well-fed so it cannot get a foothold. Use the soil-temperature tool to time the February application precisely.
Turn this guide into exact numbers for your yard, pre-filled for Dallas. No login, no sales pitch.
Free AI grass ID names it from one photo.
Soil temperature for your city, so you time pre-emergent right.
Turn the nitrogen target into bag amounts for your lawn.
Deep, infrequent run times for your grass and soil.
Seed amounts for the right window.
Relieve compacted soil at the right time.
For a full-sun yard, bermudagrass is the default: it loves the heat, handles the dry summer and foot traffic, and tolerates our alkaline clay. If you want a denser, finer lawn and will pay for sod and patience, zoysiagrass is the upgrade. Reserve St. Augustinegrass for genuinely shaded yards, since it is the one warm-season grass that takes shade but is also our most disease- and freeze-prone choice. For a low-water, low-mow sunny lawn, native buffalograss is worth a look. If you are not sure which grass you already have, snap a photo and run it through our free AI grass ID at /diagnose, and use /tools/grass-comparison to weigh two options side by side.
Most often it is iron chlorosis, not a nitrogen shortage. Our Blackland Prairie soil is alkaline (pH ~7.5 to 8.0), and that high pH chemically ties up iron so the grass cannot absorb it, leaving blades yellow with darker green veins. Adding more nitrogen does not help and can make it worse. Spray a chelated iron product for a quick fix, and re-apply iron through the season as needed, since the lime in our Blackland clay keeps the pH high and resists permanent acidification. Get a soil test first to rule out grubs or heat stress, which can look similar.
Earlier than you would think. North Texas soil crosses the 55F crabgrass-germination threshold in mid-February to early March, weeks ahead of cooler-climate cities, so your spring pre-emergent needs to be down by then, before the lawn greens up. Then apply a second pre-emergent in September to October to stop cool-season weeds like henbit and annual bluegrass. Because the spring date moves with the weather year to year, check your actual local readings with /tools/soil-temperature rather than relying on a fixed calendar date.
Yes, but treat it as a shade-only choice with eyes open, not a default lawn. St. Augustine is the most shade-tolerant warm-season grass, so it is the answer for tree-shaded yards where bermuda thins out. The catches are real for Dallas specifically: our alkaline clay is prime territory for take-all root rot, chinch bugs hammer it in hot dry summers, and a hard arctic freeze (we get them, unlike Houston) can brown or kill it. If you grow it, manage the soil with the AgriLife peat-moss topdressing rather than relying on fungicides, and keep it in shade where it actually has an edge.
Through the hot, dry summer, aim for about 1 inch of water per week delivered in one or two deep soakings rather than daily sprinkles. Deep, infrequent watering drives roots down through the Blackland clay and builds drought resilience, while frequent shallow watering keeps roots near a surface that bakes and cracks, and it invites disease on our heavy clay. Always water in the early morning so blades dry before night. Because every sprinkler throws a different rate, use /tools/watering-schedule to convert that 1 inch into exact runtimes for your zones instead of guessing minutes.
