Jefferson Davis Parish Soil Data
Jefferson Davis Parish, Louisiana
USDA SSURGO / PHZMAvg pH
5.4
Texture
Silt Loam
Drainage
N/A
Organic Matter
5.3%
Hydrologic Group
N/A
Data Story
About Soil in Jefferson Davis Parish, Louisiana
Silty plains with high acidity
Jefferson Davis Parish averages a pH of 5.39, which is considerably more acidic than the national median of 6.5. This level is also lower than the Louisiana state average of 5.74, requiring careful management for most standard crops.
Balanced silt and clay mix
Silt makes up the majority of the soil at 52.5%, providing a smooth texture that holds moisture well. The 21.0% clay and 26.5% sand create a composition that is generally easier to work than the heavy clays found elsewhere in the state.
Strong organic matter and water capacity
At 5.29%, the organic matter content is over twice the national average of 2.0%. This richness supports an available water capacity of 0.193 in/in, which beats the state average and indicates high growing potential.
Natural moisture retention
While specific drainage classes are unlisted, the high silt content and high water capacity suggest the soil stays moist longer than sandy neighbors. This makes the land particularly valuable for moisture-intensive agriculture if managed correctly.
Abundant harvests in Zone 9a
The long growing season in zone 9a is perfect for heat-tolerant crops like okra, melons, and sweet potatoes. The rich organic matter provides a great foundation for any home gardener looking to start a backyard plot.
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: Silt Loam
Typical soil profile. Actual depths vary by location.
USDA Soil Orders
Acidic Soil Detected
Your county's average pH is 5.4. These products help balance soil pH for healthier grass.
Browse Soil AmendmentsFrequently Asked Questions
What type of soil does Jefferson Davis Parish have?
Jefferson Davis Parish's soil is classified as Silt Loam. This indicates the relative proportions of sand, silt, and clay — 27% sand, 53% silt, and 21% clay. Loamy soils hold moisture well and support a wide range of plants.
Is Jefferson Davis Parish's soil acidic or alkaline?
Jefferson Davis Parish's soil has a low pH of 5.4, which is strongly acidic. Acidic soils benefit from lime applications to raise pH and improve nutrient availability.
What is the drainage class for Jefferson Davis Parish?
Drainage class data is not currently available for Jefferson Davis Parish.
What crops or plants grow well in Jefferson Davis Parish's soil?
Based on Jefferson Davis Parish's Silt Loam texture, pH of 5.4, 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 Jefferson Davis Parish?
The dominant USDA soil order for Jefferson Davis Parish is not currently available in our dataset.
Soil & Planting Advisory: Jefferson Davis Parish
Soil Verdict
Jefferson Davis Parish is in USDA hardiness zone 9a, a warm climate zone. where winter lows can reach 20°F. Warm winters keep soil biology active nearly year-round, accelerating decomposition but increasing pest and disease pressure in topsoil.
Planting Guidance
Tropical and subtropical plants are viable. Year-round gardening is possible, though summer heat may limit some cool-season crops. Frost is rare; tender plants can overwinter with minimal protection. 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
Rapid organic matter turnover means soils can become nutrient-poor quickly; test annually and fertilize based on results. High soil temperatures favor certain soilborne pathogens; practice crop rotation and avoid overwatering.
Regional Context
Jefferson Davis Parish closely matches the Louisiana average hardiness conditions. The zone range of 9a-9b within the county means soil and planting decisions should account for local elevation and topography.
Planning your lawn? View lawn care data for Jefferson Davis Parish on LawnByCounty.com →
Other Counties in Louisiana
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.