Lawn Care Guide for Mountrail County
Mountrail County, North Dakota
Data Story
About Lawn Care in Mountrail County, North Dakota
Cooler Climates in Mountrail
Mountrail County has a lawn difficulty score of 46.0, indicating a tougher-than-average environment for turf. The Hardiness Zone 4a classification reflects the cold northern climate that limits the variety of grasses that can survive.
Short Growing Seasons and Low Heat
With only 10 extreme heat days and 1,768 growing degree days, grass grows slower here than in southern North Dakota. Annual precipitation of 18.0 inches means you will still need to water regularly despite the cooler average temperatures.
Alkaline Soil with High Clay
The soil pH of 7.10 is slightly alkaline, and the 22.4% clay content is among the highest in the region. This higher clay percentage helps retain moisture but can lead to compaction, so regular aeration is recommended.
Battling Extensive Drought Periods
Mountrail County experienced 22 weeks of drought over the past year. Because clay soils can bake hard during these periods, using a soaking hose can be more effective than a traditional sprinkler for getting water to the roots.
Maximize the Growing Window
Select the most cold-tolerant Fine Fescues to handle the short season. Your target dates for planting are after the May 17 last frost, with a goal to be well-rooted before the first frost on September 23.
Lawn Difficulty Score
Recommended Grasses
Blue Grama
Bouteloua gracilis
Tall Fescue
Festuca arundinacea
Buffalograss
Bouteloua dactyloides
Climate Snapshot
Annual Precip
18.0"
Growing Degree Days
1,767.5
Base 50F
Last Spring Frost
05/17
First Fall Frost
09/23
Days Above 95F
10
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
2.1"
inches of water
Monthly Water
6,583
gallons
Estimated Monthly Cost
$52.66
at $0.008/gallon average
Estimates based on 18" annual precipitation and estimated evapotranspiration. Actual costs vary by local water rates.
Common Lawn Problems in Mountrail County
Drought Stress
With only 18 inches of annual rainfall, lawns in Mountrail County face significant drought stress. Consider drought-tolerant grass species and deep, infrequent watering.
Persistent Drought Conditions
Mountrail County experienced drought conditions for 22 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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