Izard County Soil Data
Izard County, Arkansas
USDA SSURGO / PHZMAvg pH
5.5
Texture
Loam
Drainage
N/A
Organic Matter
15.9%
Hydrologic Group
N/A
Data Story
About Soil in Izard County, Arkansas
Acidic Foundations in Izard County
Izard County's soil maintains a pH of 5.52, sitting significantly lower than the national median of 6.5. This acidic profile is typical for the region and mirrors the Arkansas state average of 5.56. While taxonomic and texture data are limited for this area, the local chemistry sets a distinct baseline for regional land use.
Balanced Sand and Silt Mix
The soil features a nearly even split between sand at 34.0% and silt at 34.2%, with a smaller 11.2% clay component. This balanced composition suggests a soil that is relatively easy to work while providing some structural stability. The low clay content indicates that the ground likely resists heavy compaction better than many neighboring counties.
Exceptional Organic Wealth
With a massive 15.86% organic matter content, Izard County far surpasses the state average of 4.15% and the national average of 2.0%. Despite this high fertility, the available water capacity sits at 0.106 in/in, which is lower than the state benchmark of 0.148 in/in. Growers here benefit from rich nutrients but must manage irrigation carefully during dry spells.
Managing Water Movement
While specific drainage classes and hydrologic groups are not categorized for this county, the physical composition points to moderate permeability. The blend of sand and silt suggests that water moves through the profile at a steady pace. Local builders and farmers should monitor site-specific moisture levels to account for the lower water-holding capacity.
Gardening in Zone 7b
Located in USDA Hardiness Zone 7b, Izard County is ideal for growing blueberries, azaleas, and other acid-loving plants. The incredible organic matter provides a natural head start for high-yield vegetable gardens. Grab your trowel and take advantage of some of the richest organic soil in the state.
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: Loam
Typical soil profile. Actual depths vary by location.
USDA Soil Orders
Acidic Soil Detected
Your county's average pH is 5.5. These products help balance soil pH for healthier grass.
Browse Soil AmendmentsFrequently Asked Questions
What type of soil does Izard County have?
Izard County's soil is classified as Loam. This indicates the relative proportions of sand, silt, and clay — 34% sand, 34% silt, and 11% clay. Loamy soils hold moisture well and support a wide range of plants.
Is Izard County's soil acidic or alkaline?
Izard County's soil has a pH of 5.5, which is moderately acidic. This range suits many crops and is common across much of the eastern US.
What is the drainage class for Izard County?
Drainage class data is not currently available for Izard County.
What crops or plants grow well in Izard County's soil?
Based on Izard County's Loam texture, pH of 5.5, 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 Izard County?
The dominant USDA soil order for Izard County is not currently available in our dataset.
Soil & Planting Advisory: Izard County
Soil Verdict
Izard County is in USDA hardiness zone 7b, a moderate climate zone. where winter lows can reach 5°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
Izard County is somewhat cooler than the Arkansas statewide average. The zone range of 7a-7b within the county means soil and planting decisions should account for local elevation and topography.
Planning your lawn? View lawn care data for Izard County on LawnByCounty.com →
Other Counties in Arkansas
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.