Lawn Care Guide for Darke County
Darke County, Ohio
Data Story
About Lawn Care in Darke County, Ohio
Darke County's Stable Growing Conditions
Darke County scores a 77.3 on the lawn difficulty scale, matching the state average and beating the national benchmark of 50.0. Its position in hardiness zone 6a offers a classic Midwestern environment for healthy turf growth.
Ideal Precipitation for Green Grass
An annual precipitation of 40.0 inches provides ample hydration for the 3,360 growing degree days each season. With only 12 extreme heat days per year, the grass faces less summer stress than many other Ohio counties.
A Balanced Soil Base
The soil pH of 6.22 is perfectly situated within the ideal 6.0 to 7.0 range for most grass types. The soil composition is balanced with 23.3% clay and 23.3% sand, providing a sturdy foundation that retains moisture well.
Navigating Dry Spells
Despite its high overall score, the county faced 27 weeks of drought last year and currently sees 90.8% of its area in abnormally dry conditions. Prioritizing water conservation and allowing grass to go dormant during heat waves is essential here.
Timing Your 6a Planting
Kentucky bluegrass and fine fescue are highly recommended for Darke County's balanced soil and climate. Plan your primary seeding after the last spring frost on April 21 or in the early fall before the October 20 frost date.
Lawn Difficulty Score
Recommended Grasses
Tall Fescue
Festuca arundinacea
Climate Snapshot
Annual Precip
40.0"
Growing Degree Days
3,360.3
Base 50F
Last Spring Frost
04/21
First Fall Frost
10/20
Days Above 95F
12
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
1,552
gallons
Estimated Monthly Cost
$12.42
at $0.008/gallon average
Estimates based on 40" annual precipitation and estimated evapotranspiration. Actual costs vary by local water rates.
Common Lawn Problems in Darke County
Persistent Drought Conditions
Darke County experienced drought conditions for 27 of the past 52 weeks. Prioritize water-efficient grasses and consider reducing lawn area.
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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