Lawn Care Guide for Wilson County
Wilson County, Texas
Data Story
About Lawn Care in Wilson County, Texas
Scorching Summers Near San Antonio
Wilson County earns a 28.4 lawn difficulty score, making it harder to maintain a lawn here than in the average Texas county. The USDA Zone 9a environment is dominated by some of the most intense heat in the region. Achieving a green lawn requires a proactive approach and careful water management.
Record-Breaking Heat and Moderate Rain
With a staggering 130 extreme heat days, this county far exceeds the state average of 105. While the 32.8 inches of annual rain is technically sufficient for grass, the 7,407 growing degree days indicate an atmosphere that evaporates water almost as fast as it falls. Frequent, heavy watering is often needed just to keep turf from browning.
Sandy Foundations and Neutral pH
The soil is predominantly sandy at 56.1%, which allows for excellent drainage but poor moisture retention. A pH level of 7.09 is nearly neutral, providing an ideal chemical environment for most common turfgrasses. However, the 21.3% clay content means the soil can still bake hard under the relentless 130 days of heat.
A Year of Constant Drought
The county is 100% covered by severe drought and has endured 53 weeks of drought over the past year. This sustained pressure means lawns are likely in a state of chronic stress. Utilizing greywater or rainwater harvesting can provide a much-needed lifeline when local water supplies are restricted.
Building a Heat-Proof Lawn
Bermuda grass is the gold standard here for its ability to go dormant during extreme drought and bounce back. Plan your planting after the spring frost on March 6 to maximize the long growing season before November 20. With over 7,400 growing degree days, your lawn will need plenty of nutrients during its active summer phase.
Lawn Difficulty Score
Recommended Grasses
Bermudagrass
Cynodon dactylon
Climate Snapshot
Annual Precip
32.8"
Growing Degree Days
7,407.2
Base 50F
Last Spring Frost
03/06
First Fall Frost
11/20
Days Above 95F
130
Hardiness Zone
9a
Seeding Calendar — Zone 9A
Seasonal Lawn Care Checklist
Spring
- Apply pre-emergent herbicide when soil reaches 55F
- Begin mowing when grass reaches 3 inches
- Start irrigation if rainfall is below 1 inch/week
- Soil test every 2-3 years — adjust lime or sulfur as needed
Summer
- Raise mowing height to reduce heat stress
- Water deeply 1-2 times per week (1 inch total)
- Avoid fertilizing cool-season grasses in peak heat
- Scout for grubs and treat if >10 per sq ft
Fall
- Overseed warm-season lawns if thinning
- Apply fall fertilizer (highest N application for cool-season)
- Continue mowing until growth stops
- Rake or mulch leaves to prevent smothering
Winter
- Apply pre-emergent for winter weeds
- Service mower and sharpen blades
- Plan spring soil amendments based on fall test
- Overseed with ryegrass for winter color
Watering Deficit Calculator
Monthly Deficit
1.4"
inches of water
Monthly Water
4,371
gallons
Estimated Monthly Cost
$34.97
at $0.008/gallon average
Estimates based on 33" annual precipitation and estimated evapotranspiration. Actual costs vary by local water rates.
Common Lawn Problems in Wilson County
Persistent Drought Conditions
Wilson County experienced drought conditions for 53 of the past 52 weeks. Prioritize water-efficient grasses and consider reducing lawn area.
Learn more about regional lawn challenges at The Lawn Report.
Want detailed soil composition, drainage classes, and soil series data? View soil details on SoilByCounty.com
Data sourced from USDA SSURGO, NOAA Climate Normals (1991-2020), USDA Plant Hardiness Zone Map, and US Drought Monitor. Lawn difficulty scores and grass recommendations are estimates for informational purposes only.
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