Dallas County Soil Data
Dallas County, Alabama
Avg pH
5.3
Texture
Sandy Loam
Drainage
N/A
Organic Matter
1.5%
Hydrologic Group
N/A
Data Story
About Soil in Dallas County, Alabama
Dallas County's River-Valley Acidity
Dallas County's soil has an average pH of 5.33, which is slightly less acidic than the state average of 5.21. However, it still falls well below the national 6.5 median, suggesting a need for lime in many agricultural applications.
A Balanced Blend of Soil Textures
The soil mix features 54.7% sand, 25.3% silt, and 16.6% clay. This composition offers better nutrient retention than sandier neighboring counties while still providing enough drainage to prevent waterlogging.
Strong Water Capacity for Crops
The available water capacity is 0.133 in/in, which is very close to the Alabama state average of 0.138. While organic matter is 1.48%, below the state average, the soil's structure provides a solid foundation for plant health.
Water Management in the Black Belt
Specific drainage classes are not listed, but the mix of silt and clay indicates moderate drainage qualities. This makes the county versatile for both row crops and pasture land, provided water is managed during wet seasons.
Prime Growing in Zone 8b
Dallas County resides in Hardiness Zone 8b, allowing for a long growing season of southern staples like collards and pecans. With a Soil Score of 20.1, your land is well-positioned for a successful and productive garden.
Soil Composition
Soil pH
Soil Series
Detailed soil series data not yet available for this county.
Hydrologic Group
Hydrologic group data not available.
Drainage Class
Drainage class data not available.
Soil Profile
Dominant texture: Sandy Loam
Typical soil profile. Actual depths vary by location.
USDA Soil Orders
Frequently Asked Questions
What type of soil does Dallas County have?
Dallas County's soil is classified as Sandy Loam. This indicates the relative proportions of sand, silt, and clay — 55% sand, 25% silt, and 17% clay. Loamy soils hold moisture well and support a wide range of plants.
Is Dallas County's soil acidic or alkaline?
Dallas 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 Dallas County?
Drainage class data is not currently available for Dallas County.
What crops or plants grow well in Dallas County's soil?
Based on Dallas County's Sandy Loam texture, pH of 5.3, and drainage class, the soil is well suited for acid-loving plants like blueberries and azaleas, row crops and vegetable gardens.
What USDA soil order is found in Dallas County?
The dominant USDA soil order for Dallas County is not currently available in our dataset.
Planning your lawn? View lawn care data for Dallas County on LawnByCounty.com →
Other Counties in Alabama
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.