Coahoma County Soil Data
Coahoma County, Mississippi
USDA SSURGO / PHZMAvg pH
6.1
Texture
Clay Loam
Drainage
N/A
Organic Matter
1.5%
Hydrologic Group
N/A
Data Story
About Soil in Coahoma County, Mississippi
Delta Soil Near Neutrality
Coahoma County boasts an average pH of 6.07, making it one of the least acidic counties in Mississippi. This measurement is significantly closer to the national median of 6.5 than the state average of 5.30.
Heavy Clay and Delta Silt
The soil contains a substantial 31.2% clay and 43.9% silt, creating a dense, nutrient-rich environment. While this 25.0% sand content is lower than some areas, the clay provides the structural 'heaviness' the Delta is known for.
High Score Despite Low Organic Matter
While organic matter is slightly lower than the state average at 1.50%, the county earns a high soil score of 43.4. The clay-rich profile compensates by holding onto essential minerals very effectively.
Slow Drainage and Rich Retention
With an available water capacity of 0.165 in/in, this soil holds a steady supply of moisture. The high clay content means water moves slowly, which is great for moisture-loving crops but can lead to muddy conditions after heavy rains.
Delta Staples in Zone 8a
This zone 8a environment is world-famous for cotton and soybeans. For your home garden, choose okra or roses that can thrive in these heavier, more neutral Delta soils.
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: Clay Loam
Typical soil profile. Actual depths vary by location.
USDA Soil Orders
Clay Soil Detected
Clay soils can struggle with drainage. These products improve soil structure and water flow.
Browse Soil AmendmentsFrequently Asked Questions
What type of soil does Coahoma County have?
Coahoma County's soil is classified as Clay Loam. This indicates the relative proportions of sand, silt, and clay — 25% sand, 44% silt, and 31% clay. Loamy soils hold moisture well and support a wide range of plants.
Is Coahoma County's soil acidic or alkaline?
Coahoma County's soil has a pH of 6.1, which is moderately acidic. This range suits many crops and is common across much of the eastern US.
What is the drainage class for Coahoma County?
Drainage class data is not currently available for Coahoma County.
What crops or plants grow well in Coahoma County's soil?
Based on Coahoma County's Clay Loam texture, pH of 6.1, and drainage class, the soil is well suited for vegetables, grains, and most field crops, row crops and vegetable gardens.
What USDA soil order is found in Coahoma County?
The dominant USDA soil order for Coahoma County is not currently available in our dataset.
Soil & Planting Advisory: Coahoma County
Soil Verdict
Coahoma County is in USDA hardiness zone 8a, a warm climate zone. where winter lows can reach 10°F. Mild winters mean soil rarely freezes deeply, allowing year-round microbial activity and faster organic matter breakdown.
Planting Guidance
Warm-season crops, citrus relatives, and heat-loving ornamentals do well. Cool-season vegetables should be planted in fall and winter. Always match plant selections to the specific microclimate of your property — low spots, slopes, and wind exposure can shift effective hardiness by half a zone.
Soil Implications
Warm soils accelerate organic matter breakdown, so compost and mulch need replenishing more frequently than in cooler zones. Sandy soils common in warm zones drain quickly; water-retentive amendments like compost or peat help hold moisture.
Regional Context
Coahoma County closely matches the Mississippi average hardiness conditions. The zone range of 8a-8b within the county means soil and planting decisions should account for local elevation and topography.
Planning your lawn? View lawn care data for Coahoma County on LawnByCounty.com →
Other Counties in Mississippi
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.