Lawn Care Guide for McCook County
McCook County, South Dakota
Data Story
About Lawn Care in McCook County, South Dakota
Steady Growth in McCook County
McCook County’s lawn difficulty score of 52.7 is slightly better than both the state and national averages. Located in Hardiness Zone 5a, the county offers a reliable environment for homeowners looking to establish a permanent green space.
Predictable Weather Patterns
Annual precipitation of 27.6 inches supports healthy growth, sitting well above the South Dakota average of 22.8 inches. With 18 extreme heat days, the summer stress is manageable, allowing for 2,692 growing degree days to fuel your lawn's development.
Near-Perfect Soil Chemistry
The soil pH of 6.97 is almost perfectly centered in the ideal range for grass. A balanced texture of 25.7% clay and 28.8% sand provides good nutrient retention without the severe drainage issues found in heavier clay soils.
Navigating Abnormally Dry Conditions
The county is currently 100% abnormally dry and weathered 31 weeks of drought over the last year. Utilizing mulch-mowing and smart irrigation can help your lawn withstand these periods of lower-than-average rainfall.
Planting for Success
Standard cool-season mixes thrive here when planted after the May 3 spring frost. Your lawn has until the first frost on October 4 to harden off, providing a solid five-month growing window for new seedlings.
Lawn Difficulty Score
Recommended Grasses
Buffalograss
Bouteloua dactyloides
Blue Grama
Bouteloua gracilis
Tall Fescue
Festuca arundinacea
Climate Snapshot
Annual Precip
27.6"
Growing Degree Days
2,692.267
Base 50F
Last Spring Frost
05/03
First Fall Frost
10/04
Days Above 95F
18
Hardiness Zone
5a
Seeding Calendar — Zone 5A
Seasonal Lawn Care Checklist
Spring
- Apply pre-emergent herbicide when soil reaches 55F
- Overseed bare spots once frost risk passes
- 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
- Core aerate compacted areas
- Apply fall fertilizer (highest N application for cool-season)
- Continue mowing until growth stops
- Rake or mulch leaves to prevent smothering
Winter
- Avoid walking on frozen turf
- Service mower and sharpen blades
- Plan spring soil amendments based on fall test
- Keep lawn clear of debris
Watering Deficit Calculator
Monthly Deficit
1.5"
inches of water
Monthly Water
4,633
gallons
Estimated Monthly Cost
$37.07
at $0.008/gallon average
Estimates based on 28" annual precipitation and estimated evapotranspiration. Actual costs vary by local water rates.
Common Lawn Problems in McCook County
Persistent Drought Conditions
McCook County experienced drought conditions for 31 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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