Sumter County Soil Data
Sumter County, South Carolina
Avg pH
5.3
Texture
Loamy sand
Drainage
Well drained
Organic Matter
3.2%
Hydrologic Group
B
Data Story
About Soil in Sumter County, South Carolina
Sumter’s sandy Ultisols offer unique potential
Dominant Ultisols here present as loamy sand with a pH of 5.31. This acidity level is typical for the state but remains much lower than the national median of 6.5, often requiring lime for traditional gardening.
Predominantly sandy and highly workable
Sumter soil is 73.4% sand, featuring only 14.8% silt and 11.8% clay. This light composition makes the soil extremely easy to work and allows roots to penetrate deeply without resistance.
Exceptional organic matter levels for the state
Sumter boasts a high organic matter content of 3.24%, well above the state average of 2.05%. While the available water capacity is slightly low at 0.103 in/in, the rich organic content provides excellent nutrient-holding potential.
Well-drained soils for healthy roots
The soil is classified as well-drained and belongs to hydrologic group B. This combination prevents waterlogging, making it an excellent choice for crops that are sensitive to 'wet feet' or for stable building foundations.
Thriving in the warmth of zone 8b
The sandy, well-drained soil and warm climate are perfect for pecans, sweet potatoes, and cotton. With the county’s superior organic matter levels, your backyard garden has a significant head start on fertility.
Soil Composition
Soil pH
Soil Series
Detailed soil series data not yet available for this county.
Hydrologic Group
Group B — Moderate Runoff
Moderately deep, moderately well-drained soils with moderate infiltration rates. Good balance of drainage and water retention.
Drainage Class
Well drained
Water is removed from the soil readily but not rapidly. Optimal for most plants and construction.
Soil Profile
Dominant texture: Loamy sand
Typical soil profile. Actual depths vary by location.
USDA Soil Orders
Frequently Asked Questions
What type of soil does Sumter County have?
Sumter County's soil is classified as Loamy sand. This indicates the relative proportions of sand, silt, and clay — 73% sand, 15% silt, and 12% clay. Loamy soils hold moisture well and support a wide range of plants.
Is Sumter County's soil acidic or alkaline?
Sumter 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 Sumter County?
Sumter County has a dominant drainage class of "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 Sumter County's soil?
Based on Sumter County's Loamy sand texture, pH of 5.3, and 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 Sumter County?
Sumter County's dominant soil order is Ultisols. Ultisols are highly weathered, clay-rich soils common in humid regions. They are low in natural fertility and often require lime and fertilizer for agriculture.
Planning your lawn? View lawn care data for Sumter County on LawnByCounty.com →
Other Counties in South Carolina
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.