Bexar County Soil Data
Bexar County, Texas
Avg pH
7.3
Texture
Loam
Drainage
Well drained
Organic Matter
1.9%
Hydrologic Group
B
Data Story
About Soil in Bexar County, Texas
Inceptisols of the San Antonio Area
Bexar County features Inceptisols, which are relatively young soils with an average pH of 7.32. This is slightly higher than the state average of 7.09 and more alkaline than the national median of 6.5. These soils represent a transition zone between the fertile prairies and the rocky plateau.
Classic Loam Texture
The soil is a well-balanced loam, consisting of 37.3% sand, 30.0% clay, and 28.9% silt. Loam is often considered the ideal texture for most plants because it balances drainage and nutrient retention perfectly. It is easy to till and provides a stable environment for diverse root systems.
Above Average Organic Matter
With an organic matter content of 1.92%, Bexar County exceeds the Texas average of 1.66%. Its available water capacity of 0.133 in/in matches the state average exactly. This suggests a healthy, productive soil that can sustain growth even during the region's intense heat.
Reliable Drainage and Infiltration
The soil is well drained and belongs to hydrologic group B, which indicates a moderate infiltration rate. This is excellent for urban development and home gardening alike, as it reduces the risk of flooding. It offers a predictable base for construction projects across the county.
Thriving Gardens in Zone 9a
Zone 9a provides a long, warm season where everything from cacti to leafy greens can flourish. The loamy soil makes Bexar County one of the friendliest places in Texas to start a backyard garden. Plant some lantana or sage to see how quickly things take root in this versatile ground.
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
Well drained
Water is removed from the soil readily but not rapidly. Optimal for most plants and construction.
Soil Profile
Dominant texture: Loam
Typical soil profile. Actual depths vary by location.
USDA Soil Orders
Frequently Asked Questions
What type of soil does Bexar County have?
Bexar County's soil is classified as Loam. This indicates the relative proportions of sand, silt, and clay — 37% sand, 29% silt, and 30% clay. Loamy soils hold moisture well and support a wide range of plants.
Is Bexar County's soil acidic or alkaline?
Bexar County's soil has a pH of 7.3, which is near neutral. This range is ideal for most garden plants and field crops.
What is the drainage class for Bexar County?
Bexar County has a dominant drainage class of "Well drained." Well-drained soils allow excess water to move through quickly, reducing waterlogging risk and supporting most field and garden crops.
What crops or plants grow well in Bexar County's soil?
Based on Bexar County's Loam texture, pH of 7.3, and Well drained, the soil is well suited for drought-tolerant crops and native grasses, row crops and vegetable gardens, most annual and perennial crops.
What USDA soil order is found in Bexar County?
Bexar County'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.
Planning your lawn? View lawn care data for Bexar 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.