Lawn Care Guide for Foster County
Foster County, North Dakota
Data Story
About Lawn Care in Foster County, North Dakota
Foster County’s Strong Lawn Performance
Foster County earns a 59.4 lawn difficulty score, nearly ten points higher than the national median. It is a highly favorable location for gardening in Hardiness Zone 4a.
Steady Growth with Low Heat Stress
Only 8 extreme heat days per year mean your grass avoids the summer dormancy common in hotter regions. Annual precipitation of 21.0 inches provides a solid foundation, exceeding the state average of 19.5 inches.
Fast-Draining Sandy Soil Mix
A high sand content of 47.4% and 18.1% clay creates a soil that drains quickly after the spring thaw. The pH of 7.26 is slightly alkaline, so consider adding compost to increase acidity and moisture retention.
Zero Drought Weeks for Healthy Growth
Foster County has seen zero weeks in drought over the past year, putting it in an elite category for moisture stability. This consistent hydration makes it much easier to maintain a thick, weed-resistant turf.
Reliable Planting Windows in Foster
Mixes featuring Fine Fescue work well here to complement the well-draining soil. The growing season typically kicks off after May 12 and offers a reliable window until the first frost hits around September 28.
Lawn Difficulty Score
Recommended Grasses
Blue Grama
Bouteloua gracilis
Tall Fescue
Festuca arundinacea
Buffalograss
Bouteloua dactyloides
Climate Snapshot
Annual Precip
21.0"
Growing Degree Days
2,096.533
Base 50F
Last Spring Frost
05/12
First Fall Frost
09/28
Days Above 95F
8
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
1.9"
inches of water
Monthly Water
6,018
gallons
Estimated Monthly Cost
$48.14
at $0.008/gallon average
Estimates based on 21" annual precipitation and estimated evapotranspiration. Actual costs vary by local water rates.
Common Lawn Problems in Foster County
Drought Stress
With only 21 inches of annual rainfall, lawns in Foster County face significant drought stress. Consider drought-tolerant grass species and deep, infrequent watering.
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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