Lawn Care Guide for Natrona County
Natrona County, Wyoming
USDA SSURGO / PHZMThis week in Natrona County · next up in 3 days (Jul 31)
Get ready to seed cool-season grass — the best fall window is about to open.
Data Story
About Lawn Care in Natrona County, Wyoming
Natrona County's Steep Lawn Learning Curve
Natrona County scores a 30.4 on the lawn difficulty scale, placing it below the Wyoming state average of 32.6. Located in hardiness zone 5a, local lawns must survive harsh winters and dry summers. Maintaining a lush lawn here requires more effort and resources than the national average.
Low Rain and Significant Heat
The county receives just 13.1 inches of annual precipitation, making it one of the drier regions in the state. With 28 extreme heat days per year, your lawn faces significant stress during the peak of summer. The 2,182 growing degree days provide a solid window for growth if you can supply enough water.
Groundwork for Growing Success
Specific soil data for pH and sand content is currently unavailable, necessitating a private soil test for accurate planning. Most local soils in this region benefit from regular aeration to help water reach the root zone. Amending the soil with compost can help mitigate the lack of natural rainfall by holding more moisture.
Conserving Water in Dry Times
Natrona County has experienced 35 weeks of drought over the past year, and 100% of the county is currently abnormally dry. Fortunately, only 2.3% of the area is in severe drought, providing some relief compared to neighboring counties. To conserve water, avoid over-fertilizing, which can increase the grass's thirst during dry spells.
Seeding for Success in Zone 5a
Kentucky Bluegrass blends are popular here, but consider drought-tolerant Sheep Fescue for a lower-maintenance alternative. Your best planting window begins after May 22, the typical date of the last spring frost. You must ensure the lawn is well-established before the first fall frost arrives around September 26.
Lawn Difficulty Score
Top Grass Fit for Natrona 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 Natrona County.
Why we ruled these out
- Scotts Turf Builder Bermudagrass — USDA zone 5a 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
Buffalograss
Bouteloua dactyloides
Blue Grama
Bouteloua gracilis
Tall Fescue
Festuca arundinacea
Choosing grass in Natrona County
Severe drought (35 wk in drought / yr) and short growing season (127-day window) are the two things working hardest against a lawn in Natrona County. Here's how to choose for both — then the specific pick.
- Drought-tolerant grass seedWhat survives where water is scarce and often restricted.
- Germinating fast in a short windowPre-germination and priming when the season is tight.
- Tall Fescue, explainedTraits, care, and where Tall Fescue wins — the species behind your top match.
Top match for Natrona County: Tall Fescue
See the full breakdownPremium Grass Seeds is a sister site in our network. We may earn a commission from qualifying purchases made through its retailer links — this never affects your price. Guidance here reflects your county’s climate and soil data, not hands-on testing.
Climate Snapshot
Annual Precip
13.1"
Growing Degree Days
2,182.471
Base 50F
Last Spring Frost
05/22
First Fall Frost
09/26
Days Above 95F
28
Hardiness Zone
5a
Seeding Calendar — Natrona County
Personalized to this county’s frost dates — a 127-day growing season. Windows below are computed from local last-spring and first-fall frost normals, so they differ county-to-county even within USDA Zone 5A.
Plan your seeding — Natrona County
Pick a grass and a goal to get a personalized schedule anchored to this county’s frost dates.
- 1Prepare the seedbedMay 21 – Jun 3
Mow low, dethatch or rake, and loosen the top ½ inch of soil so seed makes good contact.
- 2Sow seedJun 4 – Jul 2
Best window to sow Buffalograss in Natrona County, anchored to your local frost dates.
- 3EstablishJul 3 – Jul 30
Protect young seedlings: mow only after they reach ~3 inches and hold off on weed pre-emergents until established.
Keep the seedbed consistently moist — roughly ¼ inch of water daily, split into shorter cycles if the surface dries out quickly. County-specific soil texture isn’t available here, so adjust to how fast your own soil drains.
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
2.6"
inches of water
Monthly Water
8,245
gallons
Estimated Monthly Cost
$65.96
at $0.008/gallon average
Estimates based on 13" annual precipitation and estimated evapotranspiration. Actual costs vary by local water rates.
Common Lawn Problems in Natrona County
Drought Stress
With only 13 inches of annual rainfall, lawns in Natrona County face significant drought stress. Consider drought-tolerant grass species and deep, infrequent watering.
Persistent Drought Conditions
Natrona County experienced drought conditions for 35 of the past 52 weeks. Prioritize water-efficient grasses and consider reducing lawn area.
Learn more about regional lawn challenges at The Lawn Report.
Lawn Care Advisory: Natrona County
Lawn Verdict
Natrona County sits in USDA hardiness zone 5a, a transitional zone where cool-season grasses dominate but some warm-season varieties can survive. with winter lows reaching around -20.0°F. though only 2,182.471 growing degree days favor cool-season varieties like Kentucky bluegrass and fescue. Low rainfall (13.1 inches) means supplemental irrigation is essential during summer months.
Seasonal Breakdown
Wait until after May 22 to seed or overseed; soil temperatures should consistently reach 50-55°F. Cool summers (July averages 70.9°F) reduce heat stress — maintain regular mowing and moderate watering. Aerate and overseed cool-season lawns by early fall, well before September 26; this is the best renovation window. Cool winters (January averages 24.7°F) mean slow or dormant growth; keep debris off the lawn.
Watering Guidance
Low annual precipitation (13.1 inches) makes irrigation essential for maintaining green turf through summer. Currently, 100.0% of the county is in moderate drought according to the US Drought Monitor. Consider reducing irrigation frequency and allowing cool-season lawns to go semi-dormant during peak heat. Cool summers reduce water demand; overwatering is a bigger risk than drought stress.
Regional Context
Natrona County is close to the Wyoming average temperature, USDA zone 5a 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 Natrona County in?
What is the best grass for Natrona County?
How long is the growing season in Natrona County?
How much rainfall does Natrona 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 Natrona County