McCulloch County Soil Data
McCulloch County, Texas
Avg pH
7.5
Texture
Clay Loam
Drainage
N/A
Organic Matter
2.1%
Hydrologic Group
D
Data Story
About Soil in McCulloch County, Texas
The Alkaline Heart of Texas
McCulloch County features an average pH of 7.53, which is notably higher than the national median of 6.5. This alkaline profile is typical for the geographic center of Texas, where limestone parent materials dominate. Plants that prefer acidic soil may require amendments to thrive here.
A Versatile Loamy Mix
The soil composition includes 39.5% sand, 31.6% silt, and 28.9% clay. This balanced distribution provides a solid foundation for both drainage and nutrient storage. It lacks the extreme workability issues of pure clay while retaining more water than pure sand.
Above Average Organic Riches
Organic matter content is 2.11%, which is significantly higher than the Texas state average of 1.66%. The available water capacity is also strong at 0.135 in/in, slightly exceeding the state benchmark. These factors give McCulloch County a higher-than-average potential for sustainable agriculture.
Slow Infiltration and Surface Runoff
Most soils here belong to hydrologic group D, indicating slow infiltration and a high potential for runoff during heavy Texas rainstorms. This is often due to dense subsoil layers that restrict downward water movement. Landowners should plan for erosion control and water harvesting to manage this runoff.
Resilient Ranching in Zone 8b
In USDA hardiness zone 8b, this county is perfect for native grasses, pecans, and hardy vegetables like squash and okra. The strong organic matter supports a healthy soil food web for your garden. Get your seeds in the ground early to beat the intense summer heat.
Soil Composition
Soil pH
Soil Series
Detailed soil series data not yet available for this county.
Hydrologic Group
Group D — High Runoff
Clay soils with very slow infiltration rates. Highest runoff potential. These soils have a permanent high water table or are shallow over impervious material.
Drainage Class
Drainage class data not available.
Soil Profile
Dominant texture: Clay Loam
Typical soil profile. Actual depths vary by location.
USDA Soil Orders
Frequently Asked Questions
What type of soil does McCulloch County have?
McCulloch County's soil is classified as Clay Loam. This indicates the relative proportions of sand, silt, and clay — 40% sand, 32% silt, and 29% clay. Loamy soils hold moisture well and support a wide range of plants.
Is McCulloch County's soil acidic or alkaline?
McCulloch County's soil has a pH of 7.5, which is mildly to moderately alkaline. Sulfur amendments can lower pH if needed.
What is the drainage class for McCulloch County?
Drainage class data is not currently available for McCulloch County.
What crops or plants grow well in McCulloch County's soil?
Based on McCulloch County's Clay Loam texture, pH of 7.5, and drainage class, the soil is well suited for drought-tolerant crops and native grasses, row crops and vegetable gardens.
What USDA soil order is found in McCulloch County?
The dominant USDA soil order for McCulloch County is not currently available in our dataset.
Planning your lawn? View lawn care data for McCulloch County on LawnByCounty.com →
Other Counties in Texas
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.