Lawn Care Guide for Coal County
Coal County, Oklahoma
Data Story
About Lawn Care in Coal County, Oklahoma
Facing Harder Conditions in Coal County
Coal County presents a tougher-than-average environment with a lawn difficulty score of 40.6. This score is significantly lower than the national median of 50.0, indicating that growing a lush lawn here requires extra care. Despite being in the temperate Zone 7b, regional factors like soil acidity and drought create a high-maintenance landscape.
High Precipitation and Steady Summer Warmth
Coal County receives 45.1 inches of rain per year, which is significantly more than the Oklahoma average of 37.2 inches. There are 67 extreme heat days annually, supported by 5,164 growing degree days that favor warm-season turf. The growing season is reliably long, beginning after the March 31 frost and lasting until November 4.
Acidic Soil Levels Challenge Turf Health
The soil pH in Coal County is a low 5.25, which can lead to nutrient deficiencies in many common grass types. The soil composition consists of 18.8% clay and 37.2% sand, providing a texture that generally manages moisture well but may drain quickly. Regular soil testing and pH adjustments are essential to prevent lawn thinning in these acidic conditions.
Severe Drought Affects Most of the County
Approximately 72.8% of the county is currently experiencing severe drought, despite the high annual rainfall averages. With 22 weeks spent in drought over the last year, moisture management remains a top priority for local residents. Incorporating drought-tolerant landscaping or 'xeriscaping' principles can help reduce the water burden on traditional lawns.
Time Your Planting for Early Spring
With the last spring frost occurring on March 31, you can get an early start on your Zone 7b lawn. Consider Zoysia or Bermuda grass, which can handle the 67 days of heat if the soil pH is properly managed. Planting early allows the root system to deepen before the intense summer heat and the 72.8% severe drought conditions set in.
Lawn Difficulty Score
Recommended Grasses
Tall Fescue
Festuca arundinacea
Bermudagrass
Cynodon dactylon
Climate Snapshot
Annual Precip
45.1"
Growing Degree Days
5,163.9
Base 50F
Last Spring Frost
03/31
First Fall Frost
11/04
Days Above 95F
67
Hardiness Zone
7b
Seeding Calendar — Zone 7B
Seasonal Lawn Care Checklist
Spring
- Apply pre-emergent herbicide when soil reaches 55F
- Begin mowing when grass reaches 3 inches
- 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
- Overseed warm-season lawns if thinning
- Apply fall fertilizer (highest N application for cool-season)
- Continue mowing until growth stops
- Rake or mulch leaves to prevent smothering
Winter
- Apply pre-emergent for winter weeds
- Service mower and sharpen blades
- Plan spring soil amendments based on fall test
- Keep lawn clear of debris
Watering Deficit Calculator
Monthly Deficit
0.3"
inches of water
Monthly Water
864
gallons
Estimated Monthly Cost
$6.92
at $0.008/gallon average
Estimates based on 45" annual precipitation and estimated evapotranspiration. Actual costs vary by local water rates.
Common Lawn Problems in Coal County
Acidic Soil
Soil pH of 5.3 is below the ideal range for most grasses (6.0-7.0). Apply agricultural lime to raise pH gradually.
Persistent Drought Conditions
Coal 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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