Warren County Soil Data
Warren County, North Carolina
USDA SSURGO / PHZMAvg pH
5.8
Texture
Sandy Loam
Drainage
N/A
Organic Matter
1.2%
Hydrologic Group
N/A
Data Story
About Soil in Warren County, North Carolina
Mildly Acidic Northern Soils
Warren County features a pH of 5.81, making its soil significantly less acidic than the North Carolina average of 5.14. While still below the national median of 6.5, this higher pH makes it one of the more hospitable counties in the state for nutrient availability. It reflects a slightly different mineralogy than the deeper red clays found elsewhere.
High Sand and Moderate Silt
The soil composition is dominated by 60.3% sand, the highest in this regional group, along with 24.4% silt and 15.3% clay. This creates a very workable, light texture that resists the heavy compaction typical of the Piedmont. This grit is ideal for plants that require excellent aeration around their root systems.
Low Organic Reserves
Warren County has just 1.18% organic matter, which is well below the national 2.0% average. Its Available Water Capacity of 0.129 in/in also sits slightly below the state average of 0.134. Consequently, the soil score of 24.8 reflects a landscape that requires active management to sustain high productivity.
A Naturally Draining Landscape
Detailed drainage data is not available, but the 60.3% sand content suggests that water moves through these soils rapidly. This prevents root rot but can lead to moisture stress during the hot North Carolina summers. Strategic use of cover crops can help improve the soil's ability to hold water over time.
Success in Hardiness Zone 8a
In Zone 8a, Warren County offers a long, warm growing season perfect for watermelons and cantaloupes that love sandy ground. The relatively high pH means you may need less lime than your neighbors to get started. Embrace the sand and start a garden that celebrates the heat of the South.
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
Acidic Soil Detected
Your county's average pH is 5.8. These products help balance soil pH for healthier grass.
Browse Soil AmendmentsFrequently Asked Questions
What type of soil does Warren County have?
Warren County's soil is classified as Sandy Loam. This indicates the relative proportions of sand, silt, and clay — 60% sand, 24% silt, and 15% clay. Loamy soils hold moisture well and support a wide range of plants.
Is Warren County's soil acidic or alkaline?
Warren County's soil has a pH of 5.8, which is moderately acidic. This range suits many crops and is common across much of the eastern US.
What is the drainage class for Warren County?
Drainage class data is not currently available for Warren County.
What crops or plants grow well in Warren County's soil?
Based on Warren County's Sandy Loam texture, pH of 5.8, 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 Warren County?
The dominant USDA soil order for Warren County is not currently available in our dataset.
Soil & Planting Advisory: Warren County
Soil Verdict
Warren 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
Warren County closely matches the North Carolina average hardiness conditions. The zone range of 7b-8a within the county means soil and planting decisions should account for local elevation and topography.
Planning your lawn? View lawn care data for Warren County on LawnByCounty.com →
Other Counties in North Carolina
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.