Lawn Care Guide for Brown County
Brown County, South Dakota
Data Story
About Lawn Care in Brown County, South Dakota
Top-Tier Lawn Success in Brown
Brown County boasts a 58.3 lawn score, significantly outperforming the state average of 51.1. In Zone 4a, residents enjoy some of the most favorable conditions for low-maintenance turf in the entire region.
Low Heat and Steady Growth
With only 12 extreme heat days—half the state average—turf remains vibrant longer into the summer. The 22.4 inches of precipitation, combined with 2,502 growing degree days, creates a predictable and steady mowing rhythm.
Excellent Loamy Soil Foundation
Lawns here benefit from well-drained loam soil, which is often considered the gold standard for gardening. While the 7.12 pH is slightly alkaline, the 38.0% sand content ensures great aeration for root development.
Leading the State in Resilience
Brown County is currently free of any drought designations, having only faced 12 weeks of drought in the past year. This makes it an outlier in the state, allowing for lush growth without constant irrigation intervention.
Maximizing a Shorter Season
Because the first frost arrives early on September 29th, timing is critical for fall fertilization. Plant hardy, cold-tolerant grass species after the May 9th frost to ensure they establish during the peak growing months.
Lawn Difficulty Score
Recommended Grasses
Blue Grama
Bouteloua gracilis
Tall Fescue
Festuca arundinacea
Buffalograss
Bouteloua dactyloides
Climate Snapshot
Annual Precip
22.4"
Growing Degree Days
2,502.15
Base 50F
Last Spring Frost
05/09
First Fall Frost
09/29
Days Above 95F
12
Hardiness Zone
4a
Seeding Calendar — Zone 4A
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
1.9"
inches of water
Monthly Water
5,899
gallons
Estimated Monthly Cost
$47.19
at $0.008/gallon average
Estimates based on 22" annual precipitation and estimated evapotranspiration. Actual costs vary by local water rates.
Common Lawn Problems in Brown County
Drought Stress
With only 22 inches of annual rainfall, lawns in Brown County face significant drought stress. Consider drought-tolerant grass species and deep, infrequent watering.
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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