Lawn Care Guide for Codington County
Codington County, South Dakota
Data Story
About Lawn Care in Codington County, South Dakota
Codington County: A Lawn Care Leader
With a score of 57.8, Codington County is one of the easiest places in South Dakota to keep a lawn looking green. Its Zone 4b classification and temperate summer climate create a highly favorable environment for traditional turfgrasses.
Mild Summers and Adequate Moisture
The county enjoys a low count of just 9 extreme heat days annually, which prevents the grass from going into mid-summer dormancy. Coupled with 23.7 inches of annual precipitation, the climate does much of the heavy lifting for the local gardener.
Nearly Ideal Soil pH Levels
Codington features a soil pH of 7.07, which is very close to the ideal neutral range for nutrient availability. The soil structure consists of 23.8% clay and 28.8% sand, striking a good balance for both drainage and moisture retention.
Resilient Landscapes in Watertown
Although the county saw 16 weeks of drought last year, currently only 46.4% of the land is considered abnormally dry. This relative moisture stability helps local lawns bounce back quickly from short periods of limited rainfall.
The Early May Growing Kickoff
Plan your lawn work for the window between the May 7 spring frost and the September 30 fall frost. Cool-season grasses like Kentucky Bluegrass are the standard here and will thrive under the county's mild summer conditions.
Lawn Difficulty Score
Recommended Grasses
Blue Grama
Bouteloua gracilis
Tall Fescue
Festuca arundinacea
Buffalograss
Bouteloua dactyloides
Climate Snapshot
Annual Precip
23.7"
Growing Degree Days
2,339.3
Base 50F
Last Spring Frost
05/07
First Fall Frost
09/30
Days Above 95F
9
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
1.8"
inches of water
Monthly Water
5,492
gallons
Estimated Monthly Cost
$43.94
at $0.008/gallon average
Estimates based on 24" annual precipitation and estimated evapotranspiration. Actual costs vary by local water rates.
Common Lawn Problems in Codington County
Drought Stress
With only 24 inches of annual rainfall, lawns in Codington 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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