Lawn Care Guide for Gibson County
Gibson County, Indiana
Data Story
About Lawn Care in Gibson County, Indiana
Managing the heat in southern Indiana
Gibson County earns a 68.0 lawn difficulty score, placing it just below the Indiana state average of 71.0. Situated in Hardiness Zone 6b, the area offers a slightly longer growing season than northern Indiana counties.
High precipitation meets intense summer heat
Annual precipitation reaches 49.8 inches, nearly touching the upper limit of the ideal range for turf. However, 38 extreme heat days per year—nearly double the state average—can quickly brown out cool-season grasses without extra care.
Solid chemical foundation for turf growth
The soil pH sits at a healthy 6.33, falling perfectly within the 6.0-7.0 range for optimal grass health. While specific drainage data is limited, the mix of 17.4% clay and 23.3% sand provides a stable base for root development.
Managing humidity and short-term dry spells
The county faced nine weeks of drought last year, and currently, 100% of the area is abnormally dry. Focus on moisture retention by keeping grass taller during heat waves to shade the soil and reduce evaporation.
Tough grass types for Gibson County
Heat-tolerant Tall Fescue is the top recommendation for this 6b climate to handle the 38 annual 90-degree days. Plan your major projects after the April 13 frost date to take full advantage of the spring growing window.
Lawn Difficulty Score
Recommended Grasses
Tall Fescue
Festuca arundinacea
Climate Snapshot
Annual Precip
49.8"
Growing Degree Days
3,979.7
Base 50F
Last Spring Frost
04/13
First Fall Frost
10/25
Days Above 95F
38
Hardiness Zone
6b
Seeding Calendar — Zone 6B
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
- Mow at recommended height weekly
- 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
- Keep lawn clear of debris
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 50" annual precipitation and estimated evapotranspiration. Actual costs vary by local water rates.
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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