Question 1

How many times should I fertilize my lawn in DFW?

Accepted Answer

Bermuda grass in the DFW area typically needs 5 fertilization rounds per year: March, May, June, August, and October. St. Augustine requires a similar schedule but with lower nitrogen rates. Over-fertilizing is as damaging as under-fertilizing — it pushes excessive top growth at the expense of root development and increases susceptibility to disease.

Question 2

Why does my lawn turn yellow even though I fertilize?

Accepted Answer

Yellowing despite regular fertilization is usually an iron deficiency caused by the alkaline soil pH common throughout North Texas. DFW clay soil typically runs pH 7.5 to 8.5, which locks up iron and makes it unavailable to the grass even when present in the soil. Supplemental iron applications solve this problem quickly, and we include iron in our fertilization programs as standard.

Question 3

Should I get a soil test before fertilizing?

Accepted Answer

Yes. A soil test removes the guesswork and tells us exactly what your lawn needs. It measures pH, nitrogen, phosphorus, potassium, and micronutrient levels. The Texas A&M AgriLife Extension offers soil testing for about $15 to $50. We can collect and submit samples for you or use results you already have to build a custom program.

Question 4

Is organic fertilizer better for DFW lawns?

Accepted Answer

Organic fertilizers offer benefits for DFW clay soil because they improve soil biology and structure over time. However, they release nutrients more slowly and cost more per application. A balanced approach using both organic and synthetic products often delivers the best results — synthetic for targeted nutrient delivery and organic for long-term soil health improvement.

Question 5

How Much Does Lawn Fertilization Cost?

Accepted Answer

5,000-7,000 sq ft lawn: $49 – $75/application | 10,000+ sq ft: $75 – $175

Question 6

What Is CARE's DFW Fertilization Schedule?

Accepted Answer

We follow a 5-round North Texas fertilization calendar designed specifically for warm-season grasses in the DFW climate. Round 1 (March): Balanced starter fertilizer as grass exits dormancy, combined with pre-emergent weed control . Round 2 (May): Nitrogen-heavy application with iron supplement. Round 3 (June): Slow-release nitrogen for peak summer. Round 4 (August): Late-summer feeding for heat stress recovery. Round 5 (October): Potassium-rich winterizer for root strength and cold tolerance.

Question 7

What Is the Iron Problem in North Texas Soil?

Accepted Answer

Iron chlorosis — yellowing between leaf veins while veins remain green — is the single most common nutrient issue in DFW lawns. The alkaline clay soil throughout Tarrant and Denton County chemically binds iron into forms that grass roots cannot absorb. Adding more standard fertilizer does not fix this problem. The solution is supplemental iron applied as chelated iron or iron sulfate, which remains plant-available even in high-pH soil. We include iron in our standard fertilization rounds and off

Question 8

How Does Soil Testing Lead to Custom Fertilization Programs?

Accepted Answer

The most effective fertilization starts with data. We recommend a soil test before beginning any program, and we can collect samples during your first visit. The Texas A&M AgriLife Extension lab analyzes soil for pH, nitrogen, phosphorus, potassium, calcium, magnesium, sulfur, and micronutrients. Results typically come back within two weeks. Based on those results, we adjust nutrient ratios, add targeted amendments, and avoid applying nutrients your soil already has in adequate supply. Soil test

Question 9

How Do You Get Your Free Quote?

Accepted Answer

Local, insured, family-owned. Real prices. No runaround.

Question 10

What Nutrients Do Bermuda and St. Augustine Grass Need in DFW?

Accepted Answer

North Texas warm-season grasses have specific nutrient requirements that differ significantly from cool-season grasses and from the generic programs national chains sell.

Question 11

Why Is Nitrogen the Primary Driver of Bermuda Grass Health?

Accepted Answer

Bermuda grass is one of the highest nitrogen-demanding turfgrass species grown in North America, requiring 4 to 6 pounds of actual nitrogen per 1,000 square feet per year during the active growing season. This demand is spread across multiple applications rather than applied all at once, which would cause a rapid flush of top growth followed by weakened roots. Nitrogen drives the density, color, and lateral spread that make Bermuda the top-performing turf for DFW's hot summer conditions. Underfe

Question 12

What Role Does Phosphorus Play in DFW Lawn Root Development?

Accepted Answer

Phosphorus is the primary root-development nutrient, particularly critical during establishment and the post-dormancy spring recovery phase. DFW alkaline clay soil tends to fix phosphorus into insoluble compounds through chemical binding with calcium, making it unavailable even when present at adequate concentrations in the soil. Starter fertilizers applied in early spring use higher phosphorus ratios specifically to support root growth as Bermuda exits dormancy. Soil testing reveals actual phos

Question 13

Why Does Potassium Matter for DFW Summer Drought Tolerance?

Accepted Answer

Potassium is the stress-tolerance nutrient — it regulates water uptake through root cell membranes and supports the osmotic processes that allow grass to remain turgid during heat and drought. DFW lawns that receive adequate potassium throughout the growing season show measurably better recovery from heat stress events and reduced wilting during the 100-plus degree stretches of July and August. The fall potassium application in our program — Round 5 in October — is specifically designed as a win

Question 14

How Does Iron Solve the Yellowing Problem in North Texas Lawns?

Accepted Answer

Iron is the defining micronutrient challenge for DFW lawns. Iron chlorosis — yellowing between leaf veins while veins remain green — is the most visible symptom of iron deficiency and affects a significant percentage of lawns throughout Tarrant and Denton County. The problem is not that the soil lacks iron; most DFW clay soil has iron. The problem is that alkaline pH from 7.5 to 8.5 chemically converts iron into forms grass roots cannot absorb. Supplemental chelated iron bypasses this lock-up me

Question 15

What Is Sulfur Used For in DFW Lawn Fertilization Programs?

Accepted Answer

Sulfur serves two roles in DFW fertilization programs: as a macronutrient and as a soil amendment. Elemental sulfur applied repeatedly over several growing seasons gradually lowers alkaline soil pH by reacting with soil moisture to form sulfuric acid, which converts calcium carbonate in the clay into plant-available forms. This long-term pH reduction progressively improves availability of iron, manganese, and other pH-sensitive nutrients. The process is slow — expect to see pH movement of 0.2 to

Question 16

What Is the Difference Between Slow-Release and Quick-Release Nitrogen?

Accepted Answer

Quick-release nitrogen fertilizers (urea and ammonium nitrate) dissolve immediately after application and provide nitrogen to roots within hours, but they are also at risk for leaching out of the root zone rapidly in clay soil with poor drainage, burning the lawn if applied during extreme heat, or volatilizing into the atmosphere in hot conditions. Slow-release nitrogen products (sulfur-coated urea, polymer-coated urea, IBDU) break down gradually over 6 to 12 weeks, providing steady nutrition wi

Question 17

Why Does St. Augustine Need a Different Fertilizer Ratio Than Bermuda?

Accepted Answer

St. Augustine grass requires lower nitrogen rates than Bermuda — typically 2 to 4 pounds of actual nitrogen per 1,000 square feet per year rather than Bermuda's 4 to 6 pounds. Overfertilizing St. Augustine stimulates rapid soft top growth that becomes highly susceptible to brown patch fungal disease, chinch bug infestation, and blade rot during the humid summer months. St. Augustine is also more sensitive to certain herbicides often incorporated into weed-and-feed products formulated for Bermuda

Question 18

How Does Alkaline Clay Soil Block Nutrients in North Texas?

Accepted Answer

Understanding the chemistry of DFW soil explains why fertilizer programs built for national averages consistently underperform here.

Question 19

What Is the Typical Soil pH Across North Fort Worth?

Accepted Answer

Soil pH across the Blackland Prairie region that covers North Fort Worth, Keller, Alliance, Northlake, and Haslet typically ranges from 7.5 to 8.5 — well into the alkaline range. A neutral pH is 7.0. Most turf grasses perform best between 6.0 and 7.0. The high alkalinity in DFW soil is driven by calcium carbonate (caliche) deposits throughout the clay profile, which buffer the pH against acidification and resist most short-term correction attempts. Understanding this baseline pH is the starting

Question 20

Why Does Alkaline pH Lock Up Iron and Cause Yellowing?

Accepted Answer

At soil pH above 7.0, iron in the soil converts to ferric hydroxide and other insoluble mineral compounds that grass roots cannot absorb. This is a purely chemical phenomenon — adding more iron fertilizer without addressing the pH does not permanently solve it because the new iron also converts to unavailable forms. Chelated iron products bind iron to organic molecules that protect it from this pH-driven conversion, keeping it in a plant-available form even in alkaline conditions. For long-term

Question 21

How Does Alkaline Soil Affect Phosphorus and Micronutrient Availability?

Accepted Answer

Phosphorus availability peaks between pH 6.0 and 7.0 and drops sharply in alkaline soil as phosphorus combines with calcium to form calcium phosphate compounds that are essentially insoluble. Manganese, zinc, and copper follow similar patterns, becoming increasingly unavailable as pH rises above 7.5. Lawns showing symptoms of multiple nutrient deficiencies despite regular fertilization are often experiencing a systemic alkalinity problem rather than a series of independent deficiencies. Addressi

Question 22

What Does the Texas A&M AgriLife Soil Test Actually Measure?

Accepted Answer

The Texas A&M AgriLife Extension soil testing program analyzes samples for soil pH, phosphorus, potassium, calcium, magnesium, sodium, nitrogen (as nitrate), sulfur, iron, manganese, zinc, and copper. Results include interpretation notes and specific fertilizer recommendations for the crop type you specify — in this case turfgrass. The test costs $15 to $50 depending on the analysis package and takes 2 to 3 weeks for results. We collect and submit samples on your behalf during the initial proper

Question 23

How Do Organic Matter Additions Improve DFW Clay Over Multiple Seasons?

Accepted Answer

Adding organic matter to Blackland Prairie clay through composted top-dressing, mulching grass clippings, and incorporating compost after core aeration gradually improves the clay structure over multiple growing seasons. Organic matter introduces microbial activity that produces natural chelating compounds, improves water infiltration and retention balance, lowers pH slightly through organic acid production, and creates a more open soil structure that roots can penetrate. This is a multi-year pr

Question 24

When Should You Re-Test Your DFW Soil?

Accepted Answer

Soil conditions in Blackland Prairie clay change slowly, but annual re-testing provides valuable tracking data for fertilization program adjustments. We recommend soil testing every 2 to 3 years for established lawns on a consistent program and annually for lawns being actively treated for pH reduction or remediated from a severe deficiency. Significant changes in lawn appearance — new yellowing pattern, unexpected thinning, dramatic weed increase — warrant immediate soil testing rather than wai

Question 25

What Is the Complete 5-Round DFW Fertilization Calendar?

Accepted Answer

Each round serves a specific purpose tied to what DFW warm-season grasses need at that point in the annual cycle.

Question 26

What Happens During Round 1 in March?

Accepted Answer

The first fertilization of the year applies a balanced starter formula as Bermuda and St. Augustine begin exiting winter dormancy, typically when daytime temperatures consistently reach the 60s Fahrenheit. Round 1 is almost always combined with the spring pre-emergent weed control application, which must go down before soil temperatures hit 55 degrees to prevent crabgrass germination. Using a split fertilizer-plus-pre-emergent visit for Round 1 is the most cost-efficient approach and ensures bot

Question 27

What Happens During Round 2 in May?

Accepted Answer

By May, Bermuda and St. Augustine are in active growth and demand significant nitrogen input. Round 2 applies a higher nitrogen ratio with an iron supplement to address the iron chlorosis that becomes most visible as grass greens up in warm weather. The combination of nitrogen for density and iron for color produces the lush, uniform green appearance that defines well-maintained North Texas lawns in late spring. Round 2 should be followed by irrigation within 24 hours to activate granular produc

Question 28

What Happens During Round 3 in June?

Accepted Answer

Round 3 uses a slow-release nitrogen formulation timed for the beginning of DFW's peak summer heat. Slow-release products feed consistently over 6 to 12 weeks without creating the burst-growth response that fast-release nitrogen would trigger at the start of 100-degree weather. Consistent, measured nitrogen delivery during summer keeps color up and density maintained without pushing the turf into heat-stressed rapid growth. Round 3 is also when iron supplementation is particularly valuable as th

Question 29

What Happens During Round 4 in August?

Accepted Answer

Round 4 is the summer recovery application, timed after the peak heat of late July and early August when DFW lawns have typically experienced the most stress. By mid-August, overnight temperatures begin dropping into the 70s, which signals the grass to shift from survival mode back into active growth. Round 4 provides the nitrogen and iron needed to repair summer heat damage, fill in stress-related thin spots, and build density heading into fall. Applied correctly, an August fertilization produc

Question 30

What Happens During Round 5 in October?

Accepted Answer

The final round of the year is the winterizer — a potassium-rich, lower-nitrogen formula applied as the grass prepares for dormancy. Potassium strengthens cell walls and supports the cold-tolerance mechanisms that allow Bermuda and St. Augustine to survive North Texas winters without significant crown damage. The October window is critical: too early and the nitrogen pushes growth that will be killed by the first frost; too late and the potassium cannot be absorbed before dormancy sets in. Round

Question 31

How Does Watering After Fertilization Affect Nutrient Uptake in DFW Clay?

Accepted Answer

Granular fertilizer applied to a dry lawn must be activated by water before nutrients become available to grass roots. In DFW clay soil, the watering-in step is particularly important because the surface clay can crust between rain events and prevent granular products from dissolving and moving into the root zone. We recommend 0.25 to 0.5 inches of irrigation within 24 hours of any granular fertilizer application — enough to dissolve the granules and move nutrients into the surface 2 inches of s

Question 32

How Do You Bundle Fertilization and Weed Control for Year-Round Results?

Accepted Answer

Adding a pre-emergent weed prevention package to your fertilization program saves 10-20% versus booking each service individually.

Question 33

What Are the Most Frequently Asked Questions?

Accepted Answer

How many times should I fertilize my lawn in DFW? Bermuda grass in the DFW area typically needs 5 fertilization rounds per year: March, May, June, August, and October. St. Augustine requires a similar schedule but with lower nitrogen rates. Over-fertilizing is as damaging as under-fertilizing — it pushes excessive top growth at the expense of root development and increases susceptibility to disease. Why does my lawn turn yellow even though I fertilize? Yellowing despite regular fertilization is

Question 34

What Other Lawn Care Services Does CARE Offer?

Accepted Answer

Lawn Aeration Break up compacted DFW clay soil Weed Control Pre-emergent and post-emergent treatments Mowing & Edging Weekly professional mowing service Pricing Guide Complete pricing for all services Lawn Pest Control Chinch bug, grub, brown patch (2027 waitlist)

Question 35

Ready to Restore Your Curb Appeal?

Accepted Answer