Lawn Care Guide for Galveston County
Galveston County, Texas
Data Story
About Lawn Care in Galveston County, Texas
Coastal Humidity and Heavy Rain
Galveston County scores 41.3 for lawn difficulty, making it easier to manage than the typical Texas county. The humid Zone 9b climate supports lush growth, though it presents unique challenges compared to the national average of 50.0.
Abundant Rain and Coastal Breezes
The county receives a massive 53.7 inches of rain annually, which exceeds the ideal range and requires excellent drainage. Fortunately, coastal effects limit extreme heat to just 66 days, far fewer than the state average of 105.
Balanced pH Near the Coast
A soil pH of 6.76 is nearly perfect for most turfgrasses, facilitating easy nutrient absorption. The soil is nearly half sand (46.2%), which helps manage the high annual rainfall, though supplemental data on specific drainage classes is limited.
High Rainfall with Sudden Dips
Despite high annual rain, the county has seen 20 weeks of drought this year, with 45.5% of the area in severe conditions. Check your irrigation system for leaks frequently to ensure you aren't wasting water during these surprising dry windows.
Tropical Turf for the Coast
St. Augustine and Zoysia thrive in the high humidity and 7,931 growing degree days found here. Because the last frost usually occurs early on January 25, you can start your spring lawn prep much sooner than inland neighbors.
Lawn Difficulty Score
Recommended Grasses
Bermudagrass
Cynodon dactylon
Climate Snapshot
Annual Precip
53.7"
Growing Degree Days
7,931
Base 50F
Last Spring Frost
01/25
First Fall Frost
01/07
Days Above 95F
66
Hardiness Zone
9b
Seeding Calendar — Zone 9B
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
0.0"
inches of water
Monthly Water
0
gallons
Estimated Monthly Cost
$0.00
at $0.008/gallon average
Estimates based on 54" annual precipitation and estimated evapotranspiration. Actual costs vary by local water rates.
Common Lawn Problems in Galveston County
Excess Moisture & Fungal Disease
High annual rainfall (54 inches) increases risk of fungal diseases like brown patch and dollar spot. Ensure good drainage and avoid overwatering.
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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