Lawn Care Guide for Kenosha County
Kenosha County, Wisconsin
USDA SSURGO / PHZMData Story
About Lawn Care in Kenosha County, Wisconsin
Kenosha Lawns Benefit from Lake Influence
Kenosha County scores a 71.0 for lawn difficulty, outperforming the state average of 64.4. Located in Hardiness Zone 5b, it offers a milder climate that is conducive to diverse grass types.
High Heat and Warm Winters
With 2,710 growing degree days and 10 extreme heat days, Kenosha is warmer than much of Wisconsin. The 35.7 inches of annual rainfall supports this extra growth, though the heat requires more attentive summer watering.
Rich Silt Loam Foundations
The soil pH of 5.86 is very close to the ideal range, while the silt loam texture provides excellent moisture retention. Moderately well-drained conditions help maintain 16.0% clay and 31.3% sand for a robust root system.
Managing Dry Southern Spells
Despite 14 weeks of drought last year, the county currently has 100% abnormally dry coverage. Homeowners should utilize mulch-mowing to retain soil moisture during these frequent dry periods.
Kenosha's Extended Planting Window
The growing season is long, starting April 28 and lasting until October 19. This gives you plenty of time to establish heat-tolerant turf like Tall Fescue blends.
Lawn Difficulty Score
Soil Summary
pH
5.9
Texture
Silt loam
Drainage
Moderately well drained
Organic Matter
5.5%
Top Grass Fit for Kenosha County
Excellent match
Jonathan Green Black Beauty Ultra
Jonathan Green
Top cultivar score: 100/100
Zone 5b vs Tall Fescue's 3–8 band.
Soil pH 5.86328733054129 vs Tall Fescue's 5.5–6.5 window.
Precipitation 35.669999999999995" + soil AWC vs Tall Fescue's 20–30" need.
Growing-degree-days + frost window vs a intermediate-difficulty establishment.
If you spend any time on lawn care forums, Reddit's r/lawncare, or YouTube lawn channels, one name comes up more than any other: Jonathan Green Black Beauty Ultra. It's practically a cult favorite, and the label, cultivar story, and long-running owner reports explain why. The secret is in the genetics.
In Kenosha County, USDA zone 5b, soil pH 5.9, silt loam, Jonathan Green Black Beauty Ultra scores 100/100 — a strong zone match, adequate moisture, and a long enough establishment window.
Why we ruled these out
- Scotts Turf Builder Bermudagrass — USDA zone 5b 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
Tall Fescue
Festuca arundinacea
Climate Snapshot
Annual Precip
35.7"
Growing Degree Days
2,709.667
Base 50F
Last Spring Frost
04/28
First Fall Frost
10/19
Days Above 95F
10
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
0.8"
inches of water
Monthly Water
2,480
gallons
Estimated Monthly Cost
$19.84
at $0.008/gallon average
Estimates based on 36" annual precipitation and estimated evapotranspiration. Actual costs vary by local water rates.
Lawn Care Advisory: Kenosha County
Lawn Verdict
Kenosha County sits in USDA hardiness zone 5b, a transitional zone where cool-season grasses dominate but some warm-season varieties can survive. with winter lows reaching around -15.0°F. and 2,709.667 growing degree days, sufficient for most common turfgrasses. Moderate rainfall (35.7 inches) generally supports healthy lawns with minimal supplemental watering.
Seasonal Breakdown
Wait until after April 28 to seed or overseed; soil temperatures should consistently reach 50-55°F. Cool summers (July averages 72.1°F) reduce heat stress — maintain regular mowing and moderate watering. Aerate and overseed cool-season lawns by early fall, well before October 19; this is the best renovation window. Cool winters (January averages 22.9°F) mean slow or dormant growth; keep debris off the lawn.
Watering Guidance
With 35.7 inches of annual rainfall, established lawns typically need watering only during extended dry spells. 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
Kenosha County is 4.0°F warmer than the Wisconsin average, USDA zone 5b 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 Kenosha County in?
What is the best grass for Kenosha County?
How much rainfall does Kenosha County get?
What is the soil pH in Kenosha County?
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 Kenosha County