Guilford County Soil Data
Guilford County, North Carolina
Avg pH
5.6
Texture
Sandy Loam
Drainage
N/A
Organic Matter
1.2%
Hydrologic Group
N/A
Data Story
About Soil in Guilford County, North Carolina
Moderately Acidic Piedmont Soils
Guilford County features a soil pH of 5.63, which is more alkaline than the North Carolina average of 5.14 but still falls below the national median of 6.5. This moderate acidity creates a unique chemistry for local plants. While specific taxonomic orders are not documented for this zone, the overall soil score of 23.6 indicates a challenging but manageable environment.
A Gritty Sand and Silt Blend
The soil composition consists of 56.5% sand, 23.5% silt, and 18.7% clay. This mix provides a balance of workability and structure, though the high sand content ensures the ground doesn't become too heavy or compacted. Farmers benefit from a soil that is easy to till while still retaining enough clay to hold its form.
Low Organic Matter Requires Boosting
With an organic matter content of 1.22%, Guilford trails far behind the state average of 5.12%. However, the available water capacity of 0.135 in/in matches the state average, meaning the soil holds moisture well once it is absorbed. Gardeners should focus on adding compost to improve the low nutrient-holding organic levels.
Balanced Hydrology for Stable Ground
While specific drainage classes are not recorded, the 56.5% sand ratio typically facilitates rapid water movement. The clay percentage is high enough to prevent immediate leaching, providing a stable base for building and gardening alike. Proper site grading is essential to manage runoff during heavy Piedmont rains.
Thriving in Zone 8a
The local USDA Hardiness Zone 8a climate supports a wide variety of heat-tolerant vegetables and perennials. Tomatoes, peppers, and summer squash flourish in this sandy-silt mix when regularly fertilized. Start your garden today to take advantage of the long, warm growing season.
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
Frequently Asked Questions
What type of soil does Guilford County have?
Guilford County's soil is classified as Sandy Loam. This indicates the relative proportions of sand, silt, and clay — 57% sand, 23% silt, and 19% clay. Loamy soils hold moisture well and support a wide range of plants.
Is Guilford County's soil acidic or alkaline?
Guilford County's soil has a pH of 5.6, which is moderately acidic. This range suits many crops and is common across much of the eastern US.
What is the drainage class for Guilford County?
Drainage class data is not currently available for Guilford County.
What crops or plants grow well in Guilford County's soil?
Based on Guilford County's Sandy Loam texture, pH of 5.6, 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 Guilford County?
The dominant USDA soil order for Guilford County is not currently available in our dataset.
Planning your lawn? View lawn care data for Guilford 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.