Llano County Soil Data
Llano County, Texas
Avg pH
6.6
Texture
Loam
Drainage
Somewhat poorly drained
Organic Matter
2.0%
Hydrologic Group
C
Data Story
About Soil in Llano County, Texas
Balanced Alfisols in the Hill Country
Llano County is defined by its Alfisols, which are known for being productive for both agriculture and forestry. The average pH of 6.62 is nearly ideal, resting right at the national median of 6.5.
Versatile loamy texture
A sandy loam profile of 46.3% sand and 23.7% silt makes the ground easy to work and aerate. The 18.0% clay content provides enough structure to retain essential nutrients without becoming too heavy.
High organic matter content
Organic matter is a strong point here at 2.01%, well above the state average of 1.66%. However, the available water capacity of 0.105 in/in is lower than the Texas average, suggesting that supplemental irrigation may be needed during dry spells.
Manage for poor drainage
The soil is classified as somewhat poorly drained and falls into hydrologic group C. These conditions require careful plant selection to avoid 'wet feet' and may require raised beds for optimal gardening success.
Peaches and pecans in 8b
Hardiness zone 8b is famous for Texas peaches and pecans, both of which love this loamy soil. Dig in and start a garden that benefits from your county's superior organic fertility!
Soil Composition
Soil pH
Soil Series
Detailed soil series data not yet available for this county.
Hydrologic Group
Group C — Moderate-High Runoff
Soils with slow infiltration rates, often with a layer that impedes downward water movement. Higher clay content restricts drainage.
Drainage Class
Somewhat poorly drained
Water is removed slowly enough that the soil is wet at shallow depths for significant periods. Mottling present.
Soil Profile
Dominant texture: Loam
Typical soil profile. Actual depths vary by location.
USDA Soil Orders
Frequently Asked Questions
What type of soil does Llano County have?
Llano County's soil is classified as Loam. This indicates the relative proportions of sand, silt, and clay — 46% sand, 24% silt, and 18% clay. Loamy soils hold moisture well and support a wide range of plants.
Is Llano County's soil acidic or alkaline?
Llano County's soil has a pH of 6.6, which is near neutral. This range is ideal for most garden plants and field crops.
What is the drainage class for Llano County?
Llano County has a dominant drainage class of "Somewhat poorly drained." Poorly drained soils retain water for extended periods, which can limit crop choices and may require tile drainage or raised beds.
What crops or plants grow well in Llano County's soil?
Based on Llano County's Loam texture, pH of 6.6, and Somewhat poorly drained, the soil is well suited for vegetables, grains, and most field crops, row crops and vegetable gardens, rice, cranberries, and other water-tolerant species.
What USDA soil order is found in Llano County?
Llano County's dominant soil order is Alfisols. Alfisols are moderate to high base-status soils with a clay-enriched subsoil. They support productive forests and cropland across temperate regions.
Planning your lawn? View lawn care data for Llano 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.