Iberville Parish Soil Data
Iberville Parish, Louisiana
USDA SSURGO / PHZMAvg pH
6.5
Texture
Silt loam
Drainage
Somewhat poorly drained
Organic Matter
4.6%
Hydrologic Group
B/D
Data Story
About Soil in Iberville Parish, Louisiana
Perfectly balanced pH in Inceptisols
Iberville Parish features a pH of 6.53, matching the national median almost perfectly and beating the state average by a full point. These developing Inceptisols provide an ideal chemical environment for most plants.
Heavier clay loams for strong structure
The soil composition is 46.6% clay and 43.3% silt, resulting in a dense silt loam texture. This high clay content provides incredible nutrient-holding capacity but can be tough to dig when dry.
High organic matter fuels plant health
At 4.57%, the organic matter content is more than double the national average of 2.0%. While the water capacity of 0.170 in/in is slightly below the state average, the nutrient density remains a major asset.
Variable drainage in the river lands
Classified as somewhat poorly drained with a dual B/D hydrologic group, water movement depends heavily on local elevation. These soils can drain reasonably well but are prone to saturation during the wet season.
A gardener’s dream in Zone 9a
With a near-perfect pH and high organic matter, Iberville is a premier location for diverse vegetable gardening. From tomatoes to okra, your Zone 9a plants will find everything they need in this high-performing soil.
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
Somewhat poorly drained
Water is removed slowly enough that the soil is wet at shallow depths for significant periods. Mottling present.
Soil Profile
Dominant texture: Silt loam
Typical soil profile. Actual depths vary by location.
USDA Soil Orders
Soil Amendment Products
Browse products to improve your soil health and lawn performance.
Browse Soil AmendmentsFrequently Asked Questions
What type of soil does Iberville Parish have?
Iberville Parish's soil is classified as Silt loam. This indicates the relative proportions of sand, silt, and clay — 10% sand, 43% silt, and 47% clay. Loamy soils hold moisture well and support a wide range of plants.
Is Iberville Parish's soil acidic or alkaline?
Iberville Parish's soil has a pH of 6.5, which is near neutral. This range is ideal for most garden plants and field crops.
What is the drainage class for Iberville Parish?
Iberville Parish has a dominant drainage class of "Somewhat poorly drained." Poorly drained soils retain water for extended periods, which can limit crop choices and may require tile drainage or raised beds.
What crops or plants grow well in Iberville Parish's soil?
Based on Iberville Parish's Silt loam texture, pH of 6.5, and Somewhat poorly drained, the soil is well suited for vegetables, grains, and most field crops, row crops and vegetable gardens, rice, cranberries, and other water-tolerant species.
What USDA soil order is found in Iberville Parish?
Iberville Parish's dominant soil order is Inceptisols. Inceptisols are young soils with weak horizon development. They occur in a wide range of climates and parent materials.
Soil & Planting Advisory: Iberville Parish
Soil Verdict
Iberville 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
Iberville Parish closely matches the Louisiana average hardiness conditions.
Planning your lawn? View lawn care data for Iberville 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.