Lawn Care Guide for Washita County
Washita County, Oklahoma
Data Story
About Lawn Care in Washita County, Oklahoma
Heat Challenges Define Washita Lawns
A lawn difficulty score of 41.3 puts this county below the state average of 46.1 and the national median of 50.0. Growing a lush lawn in Zone 7b requires extra effort here due to extreme summer temperatures and dry spells.
Scorching Summers and Limited Rain
Lawns face 90 extreme heat days per year, well above the state average of 76 days. With only 28.8 inches of annual precipitation, you fall short of the 30-50 inches ideal for most lawns, making supplemental irrigation essential.
Near Ideal Soil Chemistry
The soil pH is 6.73, which falls perfectly within the ideal 6.0 to 7.0 range for healthy turf. With 43.7% sand, the soil drains well, though this means it may also dry out faster during the intense 82.7°F July peaks.
Total Coverage of Severe Drought
The entire county is currently experiencing severe drought, with 28 weeks of dry conditions recorded over the past year. To survive these 100% drought conditions, utilize mulching mowers to return moisture and nutrients to the soil.
Time Your Planting for Success
Bermudagrass is your best bet to handle the 90-degree summer heat once the last frost passes around April 5. Start seeding in early spring to establish deep roots before the relentless summer sun arrives.
Lawn Difficulty Score
Recommended Grasses
Bermudagrass
Cynodon dactylon
Buffalograss
Bouteloua dactyloides
Blue Grama
Bouteloua gracilis
Tall Fescue
Festuca arundinacea
Climate Snapshot
Annual Precip
28.8"
Growing Degree Days
4,999.9
Base 50F
Last Spring Frost
04/05
First Fall Frost
11/04
Days Above 95F
90
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
1.7"
inches of water
Monthly Water
5,229
gallons
Estimated Monthly Cost
$41.83
at $0.008/gallon average
Estimates based on 29" annual precipitation and estimated evapotranspiration. Actual costs vary by local water rates.
Common Lawn Problems in Washita County
Persistent Drought Conditions
Washita County experienced drought conditions for 28 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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