Mobile County Soil Data
Mobile County, Alabama
Avg pH
5.0
Texture
Sandy Loam
Drainage
N/A
Organic Matter
4.6%
Hydrologic Group
N/A
Data Story
About Soil in Mobile County, Alabama
Mobile's Highly Acidic Coastal Soils
Mobile County features a very acidic soil profile with an average pH of 5.01, which is significantly lower than the national median of 6.5. This level also falls below the Alabama state average of 5.21, suggesting that most local gardeners will need lime to balance their plots.
A Sandy Foundation for the Coast
The soil is dominated by 61.2% sand, complemented by 23.5% silt and a low 9.4% clay content. While this sandy mix offers excellent workability and ease of digging, it may struggle to retain essential nutrients compared to heavier soils.
Exceptional Organic Matter Levels
Mobile County boasts a high organic matter content of 4.56%, more than double the national average of 2.0%. The available water capacity of 0.146 in/in also exceeds the state average, providing a surprisingly strong reservoir for plant hydration.
Fast Drainage for Rainy Days
Although specific taxonomic data is unavailable, the high 61.2% sand concentration typically ensures rapid drainage during coastal storms. This helps prevent root rot but requires growers to monitor for nutrient leaching in the porous soil.
A Paradise for Acid-Loving Plants
The USDA hardiness zone 9a is perfect for citrus, azaleas, and camellias that thrive in acidic, high-organic environments. With such rich organic matter already present, your garden is well-positioned for a productive growing season.
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 Mobile County have?
Mobile County's soil is classified as Sandy Loam. This indicates the relative proportions of sand, silt, and clay — 61% sand, 23% silt, and 9% clay. Loamy soils hold moisture well and support a wide range of plants.
Is Mobile County's soil acidic or alkaline?
Mobile County's soil has a low pH of 5.0, which is strongly acidic. Acidic soils benefit from lime applications to raise pH and improve nutrient availability.
What is the drainage class for Mobile County?
Drainage class data is not currently available for Mobile County.
What crops or plants grow well in Mobile County's soil?
Based on Mobile County's Sandy Loam texture, pH of 5.0, 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 Mobile County?
The dominant USDA soil order for Mobile County is not currently available in our dataset.
Planning your lawn? View lawn care data for Mobile 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.