Carroll County Soil Data
Carroll County, Tennessee
Avg pH
5.3
Texture
Silt loam
Drainage
Moderately well drained
Organic Matter
1.3%
Hydrologic Group
C/D
Data Story
About Soil in Carroll County, Tennessee
Silty Alfisols in Carroll County
Carroll County's silt loam belongs to the Alfisols order, indicating a naturally fertile but acidic profile. The average pH of 5.27 sits well below the national median of 6.5, likely requiring lime for optimal crop growth.
A Silty Foundation for Farming
The soil consists of 63.0% silt and only 15.7% clay, creating a smooth texture that is easy to till. This silty mix offers a balanced foundation that holds moisture without becoming excessively heavy or difficult to work.
High Water Retention Potential
At 1.26%, organic matter levels trail the state average of 2.44%, suggesting a need for compost or cover crops. However, the available water capacity of 0.203 in/in exceeds the Tennessee average, meaning the soil retains moisture very effectively for thirsty plants.
Managing Water Infiltration
Classified as moderately well drained with a C/D hydrologic group, these fields manage water reasonably well but may face runoff challenges during heavy rains. Farmers and builders should account for this slower infiltration when planning site drainage.
Productive Gardening in Zone 7b
Hardiness zone 7b provides a long growing season for local favorites like soybeans and corn. With a soil score of 38.7, Carroll County is a solid spot for a productive home garden.
Soil Composition
Soil pH
Soil Series
Detailed soil series data not yet available for this county.
Hydrologic Group
Group C — Moderate-High Runoff
Soils with slow infiltration rates, often with a layer that impedes downward water movement. Higher clay content restricts drainage.
Drainage Class
Moderately well drained
Water is removed somewhat slowly. May have a slowly permeable layer or seasonal water table.
Soil Profile
Dominant texture: Silt loam
Typical soil profile. Actual depths vary by location.
USDA Soil Orders
Frequently Asked Questions
What type of soil does Carroll County have?
Carroll County's soil is classified as Silt loam. This indicates the relative proportions of sand, silt, and clay — 21% sand, 63% silt, and 16% clay. Loamy soils hold moisture well and support a wide range of plants.
Is Carroll County's soil acidic or alkaline?
Carroll County's soil has a low pH of 5.3, which is strongly acidic. Acidic soils benefit from lime applications to raise pH and improve nutrient availability.
What is the drainage class for Carroll County?
Carroll County has a dominant drainage class of "Moderately well drained." Well-drained soils allow excess water to move through quickly, reducing waterlogging risk and supporting most field and garden crops.
What crops or plants grow well in Carroll County's soil?
Based on Carroll County's Silt loam texture, pH of 5.3, and Moderately well drained, the soil is well suited for acid-loving plants like blueberries and azaleas, row crops and vegetable gardens, most annual and perennial crops.
What USDA soil order is found in Carroll County?
Carroll County's dominant soil order is Alfisols. Alfisols are moderate to high base-status soils with a clay-enriched subsoil. They support productive forests and cropland across temperate regions.
Planning your lawn? View lawn care data for Carroll County on LawnByCounty.com →
Other Counties in Tennessee
Soil data sourced from USDA SSURGO via Soil Data Access. Data is informational only and should not be used as a substitute for on-site soil testing. Contact your local NRCS office for site-specific soil information.