Lawn Care Guide for Buffalo County
Buffalo County, South Dakota
USDA SSURGO / PHZMData Story
About Lawn Care in Buffalo County, South Dakota
Typical South Dakota Lawn Ease
Buffalo County earns a 52.6 difficulty score, matching Aurora County and staying slightly above the state average. This Zone 4b county provides a familiar set of challenges for veteran high-plains gardeners.
Dry Climate with Intense Heat
With only 20.1 inches of precipitation, this is one of the drier counties in the region. Lawns must also survive 29 extreme heat days, requiring a robust irrigation plan to maintain growth through 2,808 growing degree days.
Preparing Your Local Soil
Local data on soil pH and texture is currently limited for Buffalo County. Given the dry 20.1-inch annual rainfall, adding organic compost can improve any soil's ability to retain what little moisture is available.
Dry Conditions are Standard
The county is 100% abnormally dry and saw 14 weeks of drought in the last year. Focus on evening irrigation and avoiding fertilizer during dry spells to prevent burning the grass while it is under stress.
Seeding for a Dry Climate
Choose drought-hardy seeds like Crested Wheatgrass for a more natural, low-water look. The prime growing window opens after the May 6th frost and remains active until the cold returns on October 5th.
Lawn Difficulty Score
Top Grass Fit for Buffalo County
Cool-season grasses are the general fit here
County soil and zone data are incomplete, so we show a category recommendation rather than a precise cultivar score for Buffalo County.
Why we ruled these out
- Pennington Zenith Zoysia Grass Seed & Mulch — USDA zone 4b is below Pennington Zenith Zoysia Grass Seed & Mulch's effective range (5–10); not recommended for this county.
- Scotts Turf Builder Bermudagrass — USDA zone 4b is below Scotts Turf Builder Bermudagrass's effective range (6–11); not recommended for this county.
See our fit-score methodology for how survivability is determined.
Recommended Grasses
Blue Grama
Bouteloua gracilis
Tall Fescue
Festuca arundinacea
Climate Snapshot
Annual Precip
20.1"
Growing Degree Days
2,807.95
Base 50F
Last Spring Frost
05/06
First Fall Frost
10/05
Days Above 95F
29
Hardiness Zone
4b
Seeding Calendar — Zone 4B
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
2.2"
inches of water
Monthly Water
6,713
gallons
Estimated Monthly Cost
$53.70
at $0.008/gallon average
Estimates based on 20" annual precipitation and estimated evapotranspiration. Actual costs vary by local water rates.
Common Lawn Problems in Buffalo County
Drought Stress
With only 20 inches of annual rainfall, lawns in Buffalo County face significant drought stress. Consider drought-tolerant grass species and deep, infrequent watering.
Learn more about regional lawn challenges at The Lawn Report.
Lawn Care Advisory: Buffalo County
Lawn Verdict
Buffalo County is in USDA hardiness zone 4b, one of the coldest zones in the country. with winter lows reaching around -25.0°F. and 2,807.95 growing degree days, sufficient for most common turfgrasses. Moderate rainfall (20.1 inches) generally supports healthy lawns with minimal supplemental watering.
Seasonal Breakdown
Wait until after May 6 to seed or overseed; soil temperatures should consistently reach 50-55°F. Cool summers (July averages 74.2°F) reduce heat stress — maintain regular mowing and moderate watering. Aerate and overseed cool-season lawns by early fall, well before October 5; this is the best renovation window. Winters are harsh (January averages 17.5°F); avoid foot traffic on frozen turf and plan snow mold prevention.
Watering Guidance
Low annual precipitation (20.1 inches) makes irrigation essential for maintaining green turf through summer. Currently, 100.0% of the county is in abnormally dry according to the US Drought Monitor. Cool summers reduce water demand; overwatering is a bigger risk than drought stress.
Regional Context
Buffalo County is close to the South Dakota average temperature, USDA zone 4b helps guide grass selection compared to neighboring counties.
Want detailed soil composition, drainage classes, and soil series data? View soil details on SoilByCounty.com
Frequently Asked Questions
What USDA hardiness zone is Buffalo County in?
What is the best grass for Buffalo County?
How much rainfall does Buffalo County get?
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.
Explore more data for Buffalo County