Lawn Care Guide for Walthall County
Walthall County, Mississippi
Data Story
About Lawn Care in Walthall County, Mississippi
Difficult Growing Conditions in Walthall
With a difficulty score of 26.3, Walthall County is one of the more challenging places to keep a lawn green in Mississippi. It sits well below the state average of 30.9 and the national median of 50.0. The Zone 8b climate presents intense heat and significant moisture hurdles.
Seventy-Five Days of Intense Heat
The county experiences 75 extreme heat days annually where temperatures exceed 90°F. Combined with 62.5 inches of rain—well above the 50-inch ideal max—this creates a high-stress environment for turf. Lawns here must handle both high humidity and intense solar radiation.
Sandy Soil and High Acidity
Soil pH sits at a very acidic 5.08, requiring aggressive lime treatments to reach the 6.0 target. The high sand content of 47.9% allows for quick drainage but means nutrients wash away easily. Homeowners should focus on organic matter to improve nutrient retention.
Stable Moisture With Low Drought Risk
Walthall County only faced 8 weeks of drought over the last year, which is lower than many neighboring counties. Current conditions are stable, with only 1.6% of the area classified as abnormally dry. This consistent moisture helps offset the challenges of sandy soil.
Starting Your Lawn After March 15
The last spring frost typically occurs around March 15, marking the start of the primary growing season. Centipede and St. Augustine grasses are highly recommended for this Zone 8b heat and rainfall profile. Aim to establish new turf early to beat the 75 days of extreme heat.
Lawn Difficulty Score
Recommended Grasses
Bermudagrass
Cynodon dactylon
Climate Snapshot
Annual Precip
62.5"
Growing Degree Days
6,237.2
Base 50F
Last Spring Frost
03/15
First Fall Frost
11/16
Days Above 95F
75
Hardiness Zone
8b
Seeding Calendar — Zone 8B
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 63" annual precipitation and estimated evapotranspiration. Actual costs vary by local water rates.
Common Lawn Problems in Walthall County
Excess Moisture & Fungal Disease
High annual rainfall (63 inches) increases risk of fungal diseases like brown patch and dollar spot. Ensure good drainage and avoid overwatering.
Acidic Soil
Soil pH of 5.1 is below the ideal range for most grasses (6.0-7.0). Apply agricultural lime to raise pH gradually.
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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