Lawn Care Guide for Winneshiek County
Winneshiek County, Iowa
Data Story
About Lawn Care in Winneshiek County, Iowa
Distinctive Growing Conditions in Winneshiek
Winneshiek County achieves a high 83.8 lawn difficulty score, outperforming the state average of 77.2. Homeowners in this Zone 5a county enjoy a climate that supports healthy turf with relatively low intervention.
Temperate Summers and Ample Rain
With only 12 extreme heat days and 37.6 inches of precipitation, the climate is very friendly to grass. These conditions help maintain a green lawn throughout the summer without the constant irrigation needed in hotter regions.
Managing Excessively Drained Soil
Unique to this area, the loamy fine sand soil is classified as excessively drained. While the 6.34 pH is ideal, you must water more frequently because the soil does not hold onto moisture as long as Iowa's typical clay soils.
Resilient Against Current Drought
Winneshiek is currently free from any abnormally dry conditions, providing a great starting point for the season. Even with 6 weeks of drought last year, the local environment has shown a strong ability to recover.
Start Late for Best Results
The last spring frost on May 3 is one of the latest in the state, so patience is key for new plantings. Choose cold-hardy Kentucky Bluegrass or Fine Fescue to make the most of the 3070 growing degree days.
Lawn Difficulty Score
Soil Summary
pH
6.3
Texture
Loamy fine sand
Drainage
Excessively drained
Organic Matter
3.7%
Recommended Grasses
Tall Fescue
Festuca arundinacea
Climate Snapshot
Annual Precip
37.6"
Growing Degree Days
3,069.9
Base 50F
Last Spring Frost
05/03
First Fall Frost
10/07
Days Above 95F
12
Hardiness Zone
5a
Seeding Calendar — Zone 5A
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
0.7"
inches of water
Monthly Water
2,107
gallons
Estimated Monthly Cost
$16.85
at $0.008/gallon average
Estimates based on 38" annual precipitation and estimated evapotranspiration. Actual costs vary by local water rates.
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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