Lawn Care Guide for Jefferson County
Jefferson County, Indiana
Data Story
About Lawn Care in Jefferson County, Indiana
A Warm and Long Growing Season
Jefferson County scores a 69.2 for lawn difficulty, slightly more demanding than the Indiana average of 71.0. Its 6b hardiness zone and southern location create a distinct set of climate challenges compared to northern counties.
Handling High Heat and High Water
This county experiences 25 extreme heat days, 25% more than the state average, which can stress traditional grasses. However, the generous 48.6 inches of annual precipitation and 4,038 growing degree days support a very long and lush growing season.
Balanced Loam with Acidic Leanings
The soil pH of 5.98 is right on the edge of the ideal range, so testing is recommended to see if lime is needed. The silt loam texture is moderately well-drained, providing a stable foundation that doesn't stay too wet or too dry.
Excellent Moisture Availability
Jefferson County has only faced 5 weeks of drought in the past year, and currently has zero areas in severe drought. While 94.8% of the county is abnormally dry, the overall moisture levels remain much higher than the state average.
Extended Growth in Zone 6b
Tall Fescue is the best choice here due to its ability to handle the 25 heat days. You can begin seeding as early as April 11 and enjoy growth late into the year until the first frost on October 31.
Lawn Difficulty Score
Soil Summary
pH
6.0
Texture
Silt loam
Drainage
Moderately well drained
Organic Matter
2.1%
Recommended Grasses
Tall Fescue
Festuca arundinacea
Climate Snapshot
Annual Precip
48.6"
Growing Degree Days
4,038.4
Base 50F
Last Spring Frost
04/11
First Fall Frost
10/31
Days Above 95F
25
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 49" 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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