Texas Lawn Calculator 2026 — Grass Seed, Fertilizer, Watering & Care Guide
📊 2026 research basis: Texas A&M AgriLife Extension turfgrass selection and bermudagrass/St. Augustine management guidance, Texas water planning resources, and current 2026 lawn care pricing references.

Texas lawn care starts with climate, grass type and water limits — not one national schedule.

Choose between Bermuda, St. Augustine, Zoysia, Buffalograss and Tall Fescue with Texas-specific math.
Calculate seed, sod, plugs, fertilizer nitrogen, weekly water gallons and pro service budgets.
Regional planning for North Texas, Central Texas, Gulf Coast, West Texas and South Texas.
Water-smart recommendations for drought, city restrictions and hot summer stress.
Warm-season calendar for pre-emergent, fertilizer, aeration, mowing, pest checks and overseeding.
Includes sod-only logic for St. Augustine and optional ryegrass winter overseeding notes.
Texas quick rules for 2026:Bermuda = full sun and traffic. St. Augustine = shade and humid/coastal yards. Zoysia = premium dense turf. Buffalograss = low-water full sun. Tall Fescue = only North Texas shade/transition sites.
Water deeply, measure with catch cans, follow city restrictions, and fertilize warm-season grass only after green-up.
Texas Lawn Strategy

How to Use the Texas Lawn Calculator

Texas lawn care is different from a generic national schedule because the state covers humid Gulf Coast turf, drought-prone West Texas yards, North Texas freeze risk and South Texas near-tropical growth.

The calculator starts with lawn size, then adjusts by grass type and region. It separates grasses that can be seeded, like common Bermuda, buffalograss and Tall Fescue, from grasses that are normally installed by sod or plugs, such as St. Augustine and many Zoysia lawns. This is important because a St. Augustine seed estimate would be misleading: homeowners need sod square footage or plug counts, not pounds of seed.

Texas A&M turf guidance consistently points to adaptation first. A turfgrass must fit both the broad regional climate and the microclimate of the yard: sun, shade, soil, drainage, irrigation and traffic. A full-sun DFW front lawn can be managed very differently from a shaded Houston backyard or a low-water West Texas property.

The calculator also gives a water target in inches and gallons. One inch of water over 1,000 square feet equals about 623 gallons, so even small changes in watering frequency can change the monthly water bill. Use the output as a planning estimate, then measure your own sprinkler output with catch cups and follow local city watering rules during drought stages.

Texas shortcut

For full sun and heavy use, start with Bermuda. For shade and Gulf Coast humidity, consider St. Augustine. For a dense premium lawn, compare Zoysia. For low-water western landscapes, evaluate Buffalograss. For North Texas shade only, Tall Fescue can be an option but it needs summer care.

Why the page includes water and cost

In Texas, lawn success is usually limited by water management, not only fertilizer. Overwatering St. Augustine can push disease, underwatering new sod can kill it quickly, and watering restrictions may force a lower-input strategy. Cost also matters because sod, irrigation repair and professional mowing prices can exceed the original grass seed budget. The best lawn plan is the one you can maintain through July and August, not just one that looks good in April.

Best grass by Texas region

RegionBest choicesMain caution
Dallas-Fort Worth / North TXBermuda, Zoysia, Tall Fescue in shadeWinter freeze + summer heat
Austin / San AntonioBermuda, Zoysia, St. Augustine in shadeWater restrictions and limestone soils
Houston / Gulf CoastSt. Augustine, Bermuda, ZoysiaHumidity, disease, chinch bugs
West Texas / PanhandleBuffalograss, Bermuda, drought-tolerant blendsLow rainfall and wind
South Texas / RGVBermuda, St. Augustine, ZoysiaLong growing season and pests

Texas grass quick reference

GrassMowWaterEstablish
Bermuda1–2 in~1 in/weekSeed, sod, sprigs
St. Augustine3–4 in1–1.5 in/weekSod/plugs only
Zoysia1–2.5 in0.75–1 in/weekSod/plugs, some seed
Buffalograss3–4 in0.5–0.75 in/weekSeed/sod
Tall Fescue3–4 in1–1.5 in/weekSeed/sod
Year-Round Schedule

Texas Lawn Care Calendar 2026

Use this calendar as a starting point, then adjust for your local soil temperature, rainfall, drought restrictions and the grass type you selected.

January
  • Dormant warm-season turf
  • Spot-treat winter weeds if label allows
  • No nitrogen fertilizer
February
  • South Texas pre-emergent window
  • Soil test before spring
  • Inspect irrigation system
March
  • North/Central pre-emergent
  • First mow as growth begins
  • Avoid early nitrogen on dormant turf
April
  • Fertilize after green-up
  • Start regular mowing
  • Check sprinkler coverage
May
  • Aerate warm-season lawns
  • Watch chinch bugs in St. Augustine
  • Establish sod and Bermuda seed
June
  • Summer fertilizer if lawn is growing
  • Water deeply, early morning
  • Mow at summer height
July
  • Heat stress management
  • Reduce nitrogen during drought
  • Inspect for dry spots and pests
August
  • Final major warm-season feeding
  • Repair irrigation issues
  • Plan fall pre-emergent
September
  • Stop late nitrogen in many areas
  • Fall pre-emergent planning
  • Cool-season prep in North TX
October
  • Overseed Bermuda with rye if desired
  • Fall weed prevention
  • Reduce irrigation with cooler weather
November
  • Final mowing as needed
  • Leaf cleanup
  • Cool-season fertilization in North TX
December
  • Dormant monitoring
  • Minimal irrigation in dry winters
  • Budget spring projects
Grass Selection

Best Texas Grass Types: Bermuda vs St. Augustine vs Zoysia vs Buffalograss

The best grass is not the one that looks best in a photo. It is the one that fits your light, water, traffic and maintenance level.

Bermuda

Best for full sun, kids, dogs and heavy traffic. It recovers quickly, tolerates heat and can be seeded. It struggles in shade and may invade beds if not edged.

St. Augustine

Best for shade and humid regions. It is broad-bladed, lush and common in Houston and South Texas. It needs sod/plugs, higher mowing and careful chinch bug monitoring.

Zoysia

Best for a premium dense lawn with slower vertical growth. It is more shade-tolerant than Bermuda but slower to establish and often more expensive up front.

Buffalograss

Best for low-water, full-sun, natural landscapes, especially West Texas. It is not ideal for heavy shade, high traffic or homeowners who want a lush dark-green carpet all year.

North Texas

Dallas-Fort Worth sits in a transition area where both heat and occasional hard freezes matter. Bermuda is the safest full-sun choice. Zoysia can work well for premium lawns, while St. Augustine is usually reserved for partial shade and should be planted with cold risk in mind. Tall Fescue can work in shaded areas but needs more summer irrigation and is not the default full-sun lawn.

Central Texas

Austin and San Antonio lawns often face water restrictions, rocky soils and hot summers. Bermuda performs well in sun. Zoysia can provide a dense turf with less vertical mowing. St. Augustine is useful in shade but must be watched for pests and irrigation stress. Buffalo grass and native blends are increasingly practical for homeowners prioritizing lower water use.

Gulf Coast and East Texas

Houston and nearby regions support St. Augustine very well, but humidity increases disease pressure. Bermuda is strong in full sun, while Zoysia can be a premium option where drainage is good. Avoid excess nitrogen and nighttime irrigation because leaf wetness and humidity can increase disease pressure.

Selection checklist

Site conditionBest choice
6+ hours direct sun, high trafficBermuda
4–6 hours sun, humid/coastalSt. Augustine or Zoysia
Low-water full sunBuffalograss or Bermuda
Premium dense appearanceZoysia
North TX shadeTall Fescue or St. Augustine
Dog trafficBermuda first, Zoysia second

Do not force the wrong grass

Bermuda will thin in shade, St. Augustine can fail in severe cold, Tall Fescue struggles in Texas heat, and Buffalograss will not look like a lush irrigated St. Augustine lawn. Match the species to the site before spending money.

Water & Fertilizer

Texas Watering, Fertilizer and Mowing Rules

Good Texas lawn care is mostly about avoiding extremes: too much water, too much nitrogen, mowing too low, or starting projects during restrictions.

Use deep and infrequent watering as the default. For an established lawn, this means watering enough to wet the root zone, then allowing the surface to dry before the next irrigation. Frequent shallow watering keeps roots near the surface and makes the lawn less drought-resilient. New sod and seed are different: they need frequent light water until rooted or germinated.

Fertilizer should follow active growth. Bermuda, St. Augustine and Zoysia should not be pushed with nitrogen while dormant. Wait for green-up and at least one or two mowings. Soil testing helps determine whether phosphorus or potassium is actually needed. In many cases, a nitrogen-focused lawn fertilizer is enough, but potassium may matter where drought, wear or winter stress is a concern.

Mowing height protects the plant. Bermuda can be kept lower, St. Augustine should be higher, and summer stress usually calls for the upper end of the recommended range. The one-third rule remains the safest standard: do not remove more than one-third of the leaf blade in one mowing.

Water-smart habits

Measure sprinkler output, repair broken heads, avoid runoff, follow city rules, water early morning and reduce nitrogen during drought stress.

Fertilizer habits

Feed only active turf, avoid late-season nitrogen on warm-season grass, use soil tests, and do not fertilize before heavy rain.

Mowing habits

Sharpen blades, mow frequently enough for the one-third rule, raise height during heat, and avoid scalping St. Augustine.

Pest habits

Scout before treating. Chinch bugs often hit hot St. Augustine edges, while grubs and armyworms require correct identification and timing.

Fertilizer planning by grass

GrassTypical active-season plan
BermudaHigher N during active growth if irrigated and mowed often
St. AugustineModerate N; avoid pushing disease-prone growth
ZoysiaModerate to low N; avoid excess thatch
BuffalograssLow N; keep program minimal
Tall FescueFall feeding; light spring only

Water math

Area1 inch water0.5 inch water
1,000 sq ft623 gal312 gal
5,000 sq ft3,115 gal1,558 gal
10,000 sq ft6,230 gal3,115 gal
¼ acre6,784 gal3,392 gal
City Guides

Texas Lawn Notes by City and Region

Use these as starting assumptions for local pages, service-area content, and city-specific calculator notes.

Dallas-Fort Worth

Freeze risk + clay soil

Bermuda is the default full-sun lawn. Zoysia is a strong premium option. St. Augustine needs protected sites and cold-tolerant varieties. Clay soil makes aeration and irrigation distribution important.

Houston

Humidity + shade

St. Augustine dominates many neighborhoods, especially shaded yards. Watch chinch bugs, gray leaf spot and irrigation runoff. Bermuda thrives in full sun but loses in shade.

Austin

Water rules + limestone

Bermuda, Zoysia and St. Augustine all work depending on sun. Use soil testing and watch watering ordinances. Low-water designs may favor Bermuda, Zoysia or native options.

San Antonio

Hot summers

Bermuda is reliable in sun; St. Augustine works in shade with irrigation. Raise mowing height during summer and avoid unnecessary nitrogen in peak heat.

West Texas

Drought-first planning

Buffalograss and drought-tolerant Bermuda are usually more practical than thirsty shade grasses. Irrigation capacity and wind exposure should guide every grass choice.

South Texas

Long growing season

Warm-season lawns can stay active much longer. Pest pressure and irrigation timing matter. Pre-emergent and fertilizer windows arrive earlier than North Texas.

Examples

Texas Lawn Calculator Examples

These examples show how the calculator output can be interpreted before buying materials or requesting a quote.

DFW Bermuda

5,000 sq ft full-sun lawn

Seed~7.5 lb
Water 1 in3,115 gal/wk
Mow1–2 in
Best noteWatch shade
Houston St. Aug

7,000 sq ft shaded yard

InstallSod/plugs
Water1–1.5 in
Mow3–4 in
WatchChinch bugs
West TX

8,000 sq ft low-water lawn

GrassBuffalograss
Water0.5–0.75 in
FertilizerLow N
LookNatural
Austin Zoysia

4,500 sq ft premium lawn

InstallSod/plugs
Water0.75–1 in
MowingLess frequent
CostHigher upfront
North TX Shade

3,000 sq ft Tall Fescue area

Seed~24 lb
Best timeFall
WaterHigh summer need
RiskHeat stress
Rye Overseed

Bermuda winter color

TimingOctober
Rate5–10 lb/1k
BenefitWinter green
TradeoffSpring transition
Mistakes to Avoid

Common Texas Lawn Mistakes That Cost Money

Most failed Texas lawn projects come from timing, species mismatch or water management problems, not from a lack of products.

Fertilizing before green-up

Warm-season turf should be fed when it is actively growing, not when it is still brown from winter dormancy. Early nitrogen can feed weeds, encourage disease-prone growth and waste money. Wait until the lawn is mostly green and has needed mowing.

Planting St. Augustine seed

St. Augustine is established from sod, plugs or sprigs. A real St. Augustine lawn is not grown from seed. If a shaded Texas yard needs St. Augustine, budget for sod or plugs and protect the area from traffic during establishment.

Assuming every brown patch needs more water

Brown patches can come from dry sprinkler zones, chinch bugs, fungal disease, compacted soil, dull mower blades or dog urine. Check soil moisture and pest signs before adding irrigation time. Overwatering can make several problems worse, especially in humid Gulf Coast lawns.

Quick diagnosis table

SymptomLikely checks
Brown sunny patches in St. AugustineChinch bugs, dry edges, heat stress
Thin Bermuda under treesShade, not fertilizer deficiency
Runoff after short wateringCompaction, slope, sprinkler rate too high
Yellow but wet lawnOverwatering, iron deficiency, disease
Weeds after springPre-emergent was late or missed
FAQ

Texas Lawn Care — Frequently Asked Questions

Updated for 2026 and written for Texas homeowners comparing grass types, watering schedules, fertilization and service costs.

Bermudagrass is the best all-around choice for full-sun Texas lawns because it tolerates heat, drought and traffic and recovers quickly during the active growing season. St. Augustine is better where shade is meaningful, especially in Houston, East Texas and older neighborhoods with large live oaks. Zoysia is the premium option for a dense, slower-growing lawn with less mowing, while buffalograss is the low-water choice for West Texas or natural-style landscapes. The right choice depends on sun, irrigation, soil, local restrictions and whether you want a manicured lawn or a lower-input lawn.
Most established Texas warm-season lawns need about 1 inch of water per week in normal summer weather, including rainfall. St. Augustine may need closer to 1 to 1.5 inches in sandy or coastal soils, while Bermuda, Zoysia and buffalograss can often survive with less if you accept some drought dormancy. Apply water deeply in two or three early-morning sessions rather than a little every day. Use tuna cans, catch cups or a rain gauge to measure your sprinkler output, then adjust for city watering rules and rainfall.
For Bermuda, St. Augustine, Zoysia and other warm-season Texas grasses, apply the first fertilizer only after spring green-up and after the lawn has been mowed at least once or twice. For many areas that means April, but South Texas can be earlier and North Texas can be later after cold springs. Summer feeding is usually May through August. Stop nitrogen in early fall so the lawn can harden before cooler weather. Tall Fescue in North Texas follows a cool-season program with important fall feeding.
Spring pre-emergent is usually applied when 2-inch soil temperature approaches the low-to-mid 50s and is rising. In South Texas and Houston that can be February; in Dallas-Fort Worth and North Texas it is often late February through March. A fall pre-emergent for winter annual weeds is typically applied around September or October, depending on local soil temperature and rainfall patterns. Always water the product in according to the label and avoid applying where you plan to seed.
No. St. Augustine lawns are established with sod, plugs or sprigs, not commercial seed. Products marketed as St. Augustine seed do not create a true St. Augustine lawn. For quick coverage, sod is best. Plugs are cheaper but require patience and weed control while they fill in. In shaded Texas lawns, St. Augustine often remains the practical choice, but it still needs enough light, proper mowing height and careful pest monitoring.
Bermuda is usually safer for sunny Dallas lawns because it handles heat, drought, traffic and winter cold better than many St. Augustine varieties. St. Augustine can work in Dallas shade or protected areas, but hard freezes can damage it. Zoysia is often a good compromise for North Texas homeowners who want a denser look than Bermuda but more cold tolerance than St. Augustine. Shade level is the main deciding factor: full sun points to Bermuda, partial shade points to St. Augustine or Zoysia.
St. Augustine is very common in Houston because it tolerates humidity and partial shade better than Bermuda. Bermuda still works very well in full sun, especially on lower-maintenance or high-traffic lawns. Zoysia is a premium option for dense texture and slower vertical growth. Houston lawns need good drainage and disease awareness because humidity can encourage fungal problems, especially when lawns are overwatered, overfertilized or mowed too low.
The answer depends on grass type and soil test results. Bermudagrass commonly needs more nitrogen than St. Augustine or Zoysia, while buffalograss and centipede need very little. A typical calculator estimate is one pound of nitrogen per 1,000 square feet per active-season feeding for Bermuda or St. Augustine, but low-input programs may use less. Always base phosphorus and potassium on soil test results when possible. Over-fertilization wastes money, increases mowing and can worsen disease or water demand.
Common Bermuda is often mowed around 1 to 2 inches, though hybrid Bermuda can be kept lower with reel mowing. St. Augustine is normally maintained higher, often 3 to 4 inches, especially in summer or shade. Zoysia is commonly 1 to 2.5 inches depending on variety. Buffalograss can be maintained higher for a natural look. Use the one-third rule and avoid scalping except for specific spring Bermuda cleanup where appropriate.
Overseeding Bermuda with annual or perennial ryegrass can provide winter color, especially on high-visibility lawns. It is usually done in fall when daytime temperatures cool. The tradeoff is extra mowing, irrigation, spring transition stress and possible competition with Bermuda green-up. Many homeowners now skip winter overseeding to save water and reduce spring stress. It is most useful for show lawns, sports areas or properties where green winter appearance matters.
Many Texas cities restrict watering days, times or irrigation methods during drought. A good Texas lawn plan must work within those rules. Prioritize deep watering on allowed days, raise mowing height in heat, reduce nitrogen during drought, and avoid establishing new lawns when restrictions are tight. Warm-season grasses can go dormant during drought and recover when rain returns if the crowns remain alive. Follow local municipal rules first.
Buffalograss, Bermuda and selected drought-tolerant Zoysia or native blends are usually better than St. Augustine in West Texas because the climate is drier and rainfall is lower. Buffalograss is especially useful for low-water landscapes but it needs full sun and does not tolerate heavy traffic as well as Bermuda. Soil, irrigation availability and desired appearance matter: Bermuda gives a more conventional lawn; buffalograss gives a lower-input native look.
Aerate warm-season Texas grasses when they are actively growing, usually late spring through early summer. That timing lets Bermuda, Zoysia and St. Augustine recover quickly. Avoid aerating during dormancy, drought stress or extreme heat. Core aeration is useful for compacted clay soils, high-traffic areas and lawns where water runs off instead of soaking in. For North Texas Tall Fescue, fall is the preferred aeration window.
Match grass to the site first: Bermuda for sun, St. Augustine for shade, Zoysia for premium density and buffalograss for low-water areas. Water deeply and early in the morning, mow at the high end of the recommended range during heat, use slow-release nitrogen, and apply iron for color instead of pushing nitrogen in peak summer. Fix sprinkler coverage gaps and compacted soil before adding more water. Many brown patches are irrigation distribution problems, not a lack of total watering time.
For full sun and lower water, buffalograss can be cheapest over time, though it has a more natural appearance and is not suited to heavy shade or intense traffic. Bermuda is generally inexpensive to install and maintain, but it needs regular mowing during peak growth. St. Augustine can cost more because it is usually installed as sod and may require more water and pest monitoring. Zoysia has higher installation cost but slower vertical growth, which can reduce mowing frequency.
St. Augustine lawns should be watched for chinch bugs, especially in hot sunny areas near sidewalks and driveways. White grubs can affect many grass types. Armyworms can appear quickly and damage lawns during outbreaks. Bermuda lawns can see mite or webworm issues, while fungal diseases are more likely when lawns are overwatered, shaded or overfertilized. Identify the pest before treating and follow label directions exactly.
Bermuda, buffalograss and Tall Fescue can be seeded, though sod is faster. St. Augustine is sod or plugs only. Zoysia is often installed as sod or plugs because seeded options are limited and slower. Sod is best when you need immediate erosion control, a finished look or weed suppression. Seed is cheaper but needs careful watering and weed control during establishment. In Texas heat, spring through early summer is usually the best warm-season establishment window.
The cost depends on lawn size, frequency, city, access and whether mowing, edging, fertilization, weed control or irrigation work are included. National 2026 data commonly places mowing around a few dozen dollars per visit for smaller lawns and more for larger or difficult yards, while fertilization and seasonal treatments are separate. Use the calculator estimate as a planning range, then compare it with local quotes from providers in your Texas city.
Tall Fescue can survive in parts of North Texas and shaded transition-zone sites, but it struggles in Central, South and Gulf Coast heat. It requires more summer irrigation and does not spread like warm-season grasses. In Dallas-Fort Worth, Tall Fescue can work in shade where Bermuda fails, but many homeowners prefer Zoysia or St. Augustine depending on winter risk and light conditions. Avoid Tall Fescue as a full-sun lawn in hot Texas regions.
Warm-season Texas lawns are usually started after the soil has warmed in spring and before peak summer stress. Sod can be installed across a wider window if irrigation is available, but late spring through early summer is often best. Bermuda seed needs warm soil for germination. St. Augustine sod establishes best when nights are warm and water is reliable. Avoid starting new lawns during drought restrictions or immediately before cold weather.

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