Lawn Care Guide for Ozaukee County
Ozaukee County, Wisconsin
Data Story
About Lawn Care in Ozaukee County, Wisconsin
Steady Growth Along the Lakeshore
Ozaukee County matches the state's positive trend with a lawn difficulty score of 68.8. Its position in hardiness zone 5b offers a moderate climate that avoids the extreme temperature swings found further inland.
Cooler Summers Near the Lake
Homeowners benefit from only five extreme heat days per year and 33.9 inches of annual precipitation. The growing season is well-defined, starting after the April 27 frost and continuing through late October.
Lime Treatments for Acidic Soil
A soil pH of 5.50 is lower than the ideal 6.0-7.0 range, which may require lime to help grass absorb nutrients. The soil contains a healthy mix of 14.9% clay and 29.8% sand, providing a stable foundation for root development.
Excellent Current Drought Resilience
Ozaukee has seen only two weeks of drought in the past year and remains at 0% for abnormally dry conditions today. This stability allows for standard maintenance without the need for emergency water conservation measures.
Start Your Lawn in Late April
Kentucky Bluegrass is a favorite for this zone, providing a lush carpet that handles the local 5b winters. Seeding in late April after the final frost allows the lawn to establish before the peak growing months.
Lawn Difficulty Score
Recommended Grasses
Tall Fescue
Festuca arundinacea
Climate Snapshot
Annual Precip
33.9"
Growing Degree Days
2,304.8
Base 50F
Last Spring Frost
04/27
First Fall Frost
10/22
Days Above 95F
5
Hardiness Zone
5b
Seeding Calendar — Zone 5B
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
0.9"
inches of water
Monthly Water
2,766
gallons
Estimated Monthly Cost
$22.13
at $0.008/gallon average
Estimates based on 34" annual precipitation and estimated evapotranspiration. Actual costs vary by local water rates.
Common Lawn Problems in Ozaukee County
Acidic Soil
Soil pH of 5.5 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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