Lawn Care Guide for Cass County
Cass County, Minnesota
Data Story
About Lawn Care in Cass County, Minnesota
Tough Turf Growing in Cass
With a score of 38.1, Cass County presents a significant challenge for lawn enthusiasts compared to the 63.9 state average. Zone 4a conditions and specific soil hurdles make maintenance more labor-intensive than the national average.
Dry Air and Brief Summers
The county receives 27.0 inches of precipitation, which is lower than the Minnesota average of 30.0 inches. Lawns only face 3 extreme heat days, but the 2,117 growing degree days mean a shorter window for grass to recover from damage.
Sandy Soils Require Care
Local soil is 61.8% sand, leading to fast drainage that may leave grass thirsty. The pH of 4.95 is quite acidic, suggesting that regular lime treatments are necessary to reach the ideal 6.0 threshold.
Enduring Chronic Dry Spells
The county has spent 41 weeks in drought over the last year, with 100% of the area currently rated as abnormally dry. Incorporating organic matter into your soil can help your lawn retain precious water during these extended dry periods.
Seed for Early October Dormancy
Fine fescues are well-suited for these sandy, acidic conditions and cold Zone 4a winters. Plan your spring seeding for after the May 5 frost date to ensure young sprouts survive.
Lawn Difficulty Score
Recommended Grasses
Blue Grama
Bouteloua gracilis
Tall Fescue
Festuca arundinacea
Climate Snapshot
Annual Precip
27.0"
Growing Degree Days
2,116.98
Base 50F
Last Spring Frost
05/05
First Fall Frost
10/05
Days Above 95F
3
Hardiness Zone
4a
Seeding Calendar — Zone 4A
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
1.4"
inches of water
Monthly Water
4,457
gallons
Estimated Monthly Cost
$35.65
at $0.008/gallon average
Estimates based on 27" annual precipitation and estimated evapotranspiration. Actual costs vary by local water rates.
Common Lawn Problems in Cass County
Acidic Soil
Soil pH of 5.0 is below the ideal range for most grasses (6.0-7.0). Apply agricultural lime to raise pH gradually.
Persistent Drought Conditions
Cass County experienced drought conditions for 41 of the past 52 weeks. Prioritize water-efficient grasses and consider reducing lawn area.
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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