Lawn Care Guide for Union County
Union County, Ohio
Data Story
About Lawn Care in Union County, Ohio
Union County's Elite Lawn Score
Union County boasts an impressive lawn difficulty score of 87.5, far exceeding both the national average of 50.0 and the Ohio state average of 76.0. This makes it one of the most favorable locations for lawn care in the state.
Productive and Long Seasons
The county receives 40.5 inches of precipitation annually, perfectly matching the needs of standard turfgrass. With 3,424 growing degree days, the climate provides a long, productive window for consistent mowing and growth.
Ideal Well-Drained Silt Loam
The soil is a well-drained silt loam with a pH of 6.41, sitting right in the sweet spot for grass health. Because it has a balanced 23.9% clay content, it requires fewer amendments than most neighboring counties.
Monitoring Minor Dry Spells
Despite 8 weeks of drought in the past year, current data shows 45.0% of the county is abnormally dry. Residents should prioritize deep, infrequent watering to maintain the lawn's high-quality foundation during these periods.
The 6a Growing Window
Hardiness Zone 6a is ideal for Kentucky Bluegrass or Perennial Ryegrass blends in this soil. For best results, seed your lawn between the last frost on April 19 and the first fall frost on October 26.
Lawn Difficulty Score
Recommended Grasses
Tall Fescue
Festuca arundinacea
Climate Snapshot
Annual Precip
40.5"
Growing Degree Days
3,424
Base 50F
Last Spring Frost
04/19
First Fall Frost
10/26
Days Above 95F
18
Hardiness Zone
6a
Seeding Calendar — Zone 6A
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
0.5"
inches of water
Monthly Water
1,471
gallons
Estimated Monthly Cost
$11.76
at $0.008/gallon average
Estimates based on 40" 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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