Lawn Care Guide for Story County
Story County, Iowa
Data Story
About Lawn Care in Story County, Iowa
Story County Leads in Lawn Ease
Story County features an impressive lawn difficulty score of 83.6, the highest in this group and well above the Iowa average. Located in hardiness zone 5b, the county offers an exceptionally friendly environment for residential turf. This high score suggests that even novice gardeners can achieve professional results here.
Optimal Rainfall and Cooler Summers
With 36.4 inches of annual precipitation, the county meets the ideal moisture requirements for healthy grass. The 14 extreme heat days are lower than the state average, meaning the grass faces less thermal stress during July and August. These conditions reduce the need for constant supplemental watering and intensive summer maintenance.
Sandy Soil for Superior Drainage
Story County soil is unique for the region, containing a high 42.1% sand content alongside 22.5% clay. This mix typically provides excellent drainage, though it may require more frequent fertilization as nutrients can leach through sand more quickly. The 6.66 pH is almost ideal, facilitating easy nutrient absorption for all common grass types.
Low Drought Risk for Story Lawns
The county experienced zero weeks of drought over the past year, though 43.7% of the area is currently abnormally dry. This recent history of consistent moisture gives Story County lawns a major head start in resilience and health. Simple monitoring of current dry patches is likely all that is needed to maintain a lush appearance.
Long Growing Season in Central Iowa
A last frost date of April 26 and a first fall frost on October 12 provide a generous window for lawn activities. Zone 5b is perfect for high-quality cool-season blends that benefit from the county's superior drainage. Late April is an excellent time to start spring overseeding for a dense, weed-resistant lawn.
Lawn Difficulty Score
Recommended Grasses
Tall Fescue
Festuca arundinacea
Buffalograss
Bouteloua dactyloides
Climate Snapshot
Annual Precip
36.4"
Growing Degree Days
2,980.1
Base 50F
Last Spring Frost
04/26
First Fall Frost
10/12
Days Above 95F
14
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
2,395
gallons
Estimated Monthly Cost
$19.16
at $0.008/gallon average
Estimates based on 36" 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.
Explore more data for Story County