Lawn Care Guide for Ontonagon County
Ontonagon County, Michigan
Data Story
About Lawn Care in Ontonagon County, Michigan
Ontonagon County Lawn Difficulty Analysis
Ontonagon County matches the Michigan state average with a lawn difficulty score of 60.1. Located in Hardiness Zone 4b, it offers a more hospitable environment for turf than the national median of 50.0.
Cooler Summers and Ample Rain
A healthy 37.8 inches of annual precipitation provides more water than the state average of 34.4 inches. With only 4 extreme heat days and 1835 growing degree days, lawns here stay cool and require less frequent mowing.
Overcoming Intense Soil Acidity
Extreme acidity is a major hurdle, as the soil pH of 4.12 is well below the ideal 6.0-7.0 range. Low sand and clay content suggest you may need to amend the soil structure to improve its overall health.
Excellent Natural Drought Resilience
Resilience is high here, with only 5 weeks spent in drought over the last year. Current conditions show 0.0% of the area under drought stress, making this one of the easier spots for water management.
Planting in the Short Season
Stick to hardy, cool-season grasses that can survive the May 27 to October 1 growing window. Seeding is most effective in late summer once the risk of the final spring frost has passed.
Lawn Difficulty Score
Recommended Grasses
Tall Fescue
Festuca arundinacea
Climate Snapshot
Annual Precip
37.8"
Growing Degree Days
1,834.75
Base 50F
Last Spring Frost
05/27
First Fall Frost
10/01
Days Above 95F
4
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
0.5"
inches of water
Monthly Water
1,404
gallons
Estimated Monthly Cost
$11.23
at $0.008/gallon average
Estimates based on 38" annual precipitation and estimated evapotranspiration. Actual costs vary by local water rates.
Common Lawn Problems in Ontonagon County
Acidic Soil
Soil pH of 4.1 is below the ideal range for most grasses (6.0-7.0). Apply agricultural lime to raise pH gradually.
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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