Lawn Care Guide for Crook County
Crook County, Wyoming
Data Story
About Lawn Care in Crook County, Wyoming
Wyoming's Premier Spot for Green Grass
Crook County stands out with a lawn difficulty score of 54.2, surpassing both the state average and the national median of 50.0. This region in hardiness zone 4b is remarkably well-suited for lawn care compared to its neighbors.
Abundant Rain and Manageable Heat
At 20.2 inches of annual precipitation, Crook County is the wettest in this group, providing a much stronger natural foundation for grass. With only 22 extreme heat days and 2055 growing degree days, the climate is ideal for maintaining lush, cool-season turf.
Naturally Balanced Soil Foundation
The soil features a near-perfect pH of 6.79, sitting right in the ideal range for grass growth. With a composition of 21.2% clay and 34.1% sand, the soil offers a balanced structure that retains moisture while allowing for proper root respiration.
Resilient Through the Dry Months
The county experienced only 12 weeks of drought last year, and currently has zero area in severe drought status. This relative moisture means you can focus on maintenance rather than survival, though deep watering during the 22 heat days remains a best practice.
Optimal Growth in the Black Hills
Fine Fescues and Kentucky Bluegrass thrive here, benefiting from the superior soil and rain levels. Plant your seeds after the May 22nd frost to take full advantage of the best growing conditions found anywhere in the state.
Lawn Difficulty Score
Recommended Grasses
Blue Grama
Bouteloua gracilis
Tall Fescue
Festuca arundinacea
Climate Snapshot
Annual Precip
20.2"
Growing Degree Days
2,055.417
Base 50F
Last Spring Frost
05/22
First Fall Frost
09/25
Days Above 95F
22
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
2.0"
inches of water
Monthly Water
6,256
gallons
Estimated Monthly Cost
$50.05
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 Crook County
Drought Stress
With only 20 inches of annual rainfall, lawns in Crook 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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