Lawn Care Guide for Lincoln County
Lincoln County, Montana
USDA SSURGO / PHZMThis week in Lincoln County · next up in 4 days (Aug 1)
Get ready to seed cool-season grass — the best fall window is about to open.
Data Story
About Lawn Care in Lincoln County, Montana
Northern Latitude Lawn Care
Lincoln County's lawn score of 27.7 reflects a difficult growing environment compared to the national average of 50.0. Homeowners in Hardiness Zone 5a must work harder than the typical Montanan, whose state average is 33.4.
Managing More Heat and Rain
The county receives 19.4 inches of annual precipitation, which is higher than the state average but still thirsty for more. Turf faces 23 extreme heat days each year, requiring careful monitoring of soil moisture during July and August.
Unknown Soil Secrets
While specific soil texture data is unavailable, local conditions often require the addition of compost to improve water retention. Testing your yard's drainage class is essential to ensure the 19.4 inches of rain doesn't pool.
Resilience During Dry Spells
The county endured 45 weeks of drought over the past year, though severe drought levels are currently at zero. Maintain a lawn height of at least three inches to shade the soil and reduce water evaporation.
Start Your 5a Lawn
Fine fescues and perennial ryegrass are excellent choices for the Lincoln County climate. Plan to seed after the May 16 frost to take full advantage of the summer growing degree days.
Lawn Difficulty Score
Top Grass Fit for Lincoln 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 Lincoln 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 Lincoln County
Severe drought (45 wk in drought / yr) and short growing season (134-day window) are the two things working hardest against a lawn in Lincoln 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 Lincoln 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
19.4"
Growing Degree Days
1,686.313
Base 50F
Last Spring Frost
05/16
First Fall Frost
09/27
Days Above 95F
23
Hardiness Zone
5a
Seeding Calendar — Lincoln County
Personalized to this county’s frost dates — a 134-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 — Lincoln County
Pick a grass and a goal to get a personalized schedule anchored to this county’s frost dates.
- 1Prepare the seedbedMay 15 – May 28
Mow low, dethatch or rake, and loosen the top ½ inch of soil so seed makes good contact.
- 2Sow seedMay 29 – Jun 26
Best window to sow Buffalograss in Lincoln County, anchored to your local frost dates.
- 3EstablishJun 27 – Jul 24
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
2.0"
inches of water
Monthly Water
6,193
gallons
Estimated Monthly Cost
$49.54
at $0.008/gallon average
Estimates based on 19" annual precipitation and estimated evapotranspiration. Actual costs vary by local water rates.
Common Lawn Problems in Lincoln County
Drought Stress
With only 19 inches of annual rainfall, lawns in Lincoln County face significant drought stress. Consider drought-tolerant grass species and deep, infrequent watering.
Persistent Drought Conditions
Lincoln County experienced drought conditions for 45 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: Lincoln County
Lawn Verdict
Lincoln 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 1,686.313 growing degree days favor cool-season varieties like Kentucky bluegrass and fescue. Low rainfall (19.4 inches) means supplemental irrigation is essential during summer months.
Seasonal Breakdown
Wait until after May 16 to seed or overseed; soil temperatures should consistently reach 50-55°F. Cool summers (July averages 66.4°F) reduce heat stress — maintain regular mowing and moderate watering. Aerate and overseed cool-season lawns by early fall, well before September 27; this is the best renovation window. Cool winters (January averages 25.6°F) mean slow or dormant growth; keep debris off the lawn.
Watering Guidance
Low annual precipitation (19.4 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
Lincoln County is close to the Montana average temperature, it is somewhat wetter than the state average, 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 Lincoln County in?
What is the best grass for Lincoln County?
How long is the growing season in Lincoln County?
How much rainfall does Lincoln 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 Lincoln County