Houston County Soil Data
Houston County, Texas
Avg pH
5.8
Texture
Sandy Loam
Drainage
N/A
Organic Matter
1.5%
Hydrologic Group
D
Data Story
About Soil in Houston County, Texas
Acidic soils of East Texas
Houston County features an average soil pH of 5.77, which is significantly more acidic than the national median of 6.5. This low pH profile suggests a landscape shaped by pine forests and high rainfall typical of the region. While the taxonomic order is not specified in the data, the chemical profile is notably more acidic than the Texas state average of 7.09.
A sandy foundation for Houston County
The soil contains 54.8% sand, providing an open structure for root growth. A moderate clay content of 17.4% and 27.8% silt balance the mix, though the high sand percentage leads to rapid water movement. This texture makes the soil easy to work but less effective at holding onto essential nutrients.
Maintaining organic matter in the pines
Organic matter sits at 1.47%, which is slightly lower than the Texas state average of 1.66%. The available water capacity (AWC) matches the state average exactly at 0.133 in/in. Growers here benefit from adding compost to boost fertility levels and moisture retention.
Managing slow infiltration rates
The county falls into hydrologic group D, which indicates very slow infiltration rates and high runoff potential when the soil is saturated. While specific drainage classes are unavailable, this classification suggests that low-lying areas may stay damp longer than expected. Heavy rains can lead to surface pooling despite the high sand content in the upper layers.
Lush growth in Zone 8b
Houston County sits in USDA Hardiness Zone 8b, perfect for heat-tolerant favorites like blueberries, camellias, and southern peas. These crops thrive in the county's naturally acidic soils and long growing season. Start your garden today by selecting plants that appreciate well-draining, sandy-loam conditions.
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: Sandy Loam
Typical soil profile. Actual depths vary by location.
USDA Soil Orders
Frequently Asked Questions
What type of soil does Houston County have?
Houston County's soil is classified as Sandy Loam. This indicates the relative proportions of sand, silt, and clay — 55% sand, 28% silt, and 17% clay. Loamy soils hold moisture well and support a wide range of plants.
Is Houston County's soil acidic or alkaline?
Houston 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 Houston County?
Drainage class data is not currently available for Houston County.
What crops or plants grow well in Houston County's soil?
Based on Houston 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 Houston County?
The dominant USDA soil order for Houston County is not currently available in our dataset.
Planning your lawn? View lawn care data for Houston 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.