Lawn Care Guide for Benton County
Benton County, Tennessee
Data Story
About Lawn Care in Benton County, Tennessee
Navigating Benton's High-Heat Difficulty
Benton County scores a 43.1 on the lawn difficulty index, trailing the national average of 50.0. In this Zone 7b climate, maintaining a green lawn takes more effort than in the average Tennessee backyard.
Mowing Through the Summer Heat
The area sees 51 days of extreme heat over 90°F, which is much higher than the state average of 36 days. These conditions, paired with 51.7 inches of annual rain, create a demanding environment for non-native grass species.
Amending the Silt Loam Base
The moderately well-drained silt loam has a low pH of 5.49, requiring soil amendments to better support grass health. The balance of 19.8% clay and 21.3% sand provides a decent foundation once the acidity is corrected with lime.
Staying Green Through 20 Weeks of Drought
Benton logged 20 weeks in drought over the last year, making water conservation a top priority for homeowners. Keeping mower blades at least 3 inches high shades the soil and protects delicate roots during these extended dry stretches.
Seeding for Success in Zone 7b
Transition-zone grasses like Tall Fescue should be seeded before the 4,781 growing degree days peak in mid-summer. Use the window between the April 8th spring frost and the November 1st fall frost to ensure strong establishment.
Lawn Difficulty Score
Soil Summary
pH
5.5
Texture
Silt loam
Drainage
Moderately well drained
Organic Matter
1.3%
Recommended Grasses
Tall Fescue
Festuca arundinacea
Bermudagrass
Cynodon dactylon
Climate Snapshot
Annual Precip
51.7"
Growing Degree Days
4,780.6
Base 50F
Last Spring Frost
04/08
First Fall Frost
11/01
Days Above 95F
51
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
0.0"
inches of water
Monthly Water
0
gallons
Estimated Monthly Cost
$0.00
at $0.008/gallon average
Estimates based on 52" annual precipitation and estimated evapotranspiration. Actual costs vary by local water rates.
Common Lawn Problems in Benton County
Excess Moisture & Fungal Disease
High annual rainfall (52 inches) increases risk of fungal diseases like brown patch and dollar spot. Ensure good drainage and avoid overwatering.
Acidic Soil
Soil pH of 5.5 is below the ideal range for most grasses (6.0-7.0). Apply agricultural lime to raise pH gradually.
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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