Lawn Care Guide for Franklin County
Franklin County, Tennessee
Data Story
About Lawn Care in Franklin County, Tennessee
Meeting the Tennessee Lawn Standard
Franklin County earns a lawn difficulty score of 48.5, placing it right in line with the state average of 48.0. Residents in this 7b hardiness zone face challenges similar to the national median score of 50.0.
High Rainfall and Extended Growth
The county sees 60.9 inches of annual precipitation, which is roughly five inches more than the Tennessee average. Lawns benefit from 4,316 growing degree days, but 21 extreme heat days still require careful summer hydration.
Correcting Acidic Silty Clay
The soil is notably acidic with a pH of 5.35, falling below the ideal 6.0-7.0 range for most grasses. Because the ground consists of 23.9% clay and is well-drained, adding lime is a common necessity to balance the foundation.
Steady Hydration for Dry Spells
With 14 weeks spent in drought over the last year, 100% of the county is currently under abnormally dry conditions. Because the soil is well-drained, lawns can dry out quickly, making consistent moisture monitoring vital during the summer months.
Optimal Planting in Zone 7b
Bermuda and Zoysia are excellent warm-season choices for this climate, while tall fescue remains a popular cool-season option. Aim to seed your lawn after the last spring frost on April 6 to take full advantage of the long growing season.
Lawn Difficulty Score
Recommended Grasses
Tall Fescue
Festuca arundinacea
Bermudagrass
Cynodon dactylon
Climate Snapshot
Annual Precip
60.9"
Growing Degree Days
4,315.7
Base 50F
Last Spring Frost
04/06
First Fall Frost
11/04
Days Above 95F
21
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 61" annual precipitation and estimated evapotranspiration. Actual costs vary by local water rates.
Common Lawn Problems in Franklin County
Excess Moisture & Fungal Disease
High annual rainfall (61 inches) increases risk of fungal diseases like brown patch and dollar spot. Ensure good drainage and avoid overwatering.
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.
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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