Logan County Soil Data
Logan County, Illinois
Avg pH
6.6
Texture
Silt Loam
Drainage
N/A
Organic Matter
2.8%
Hydrologic Group
N/A
Data Story
About Soil in Logan County, Illinois
Productive Silt Landscapes
Logan County features a pH of 6.59, placing it slightly above the national median and reflecting healthy, near-neutral soil. The county’s overall soil score of 78.6 is well above the state average of 73.6.
Dominant Silt Composition
The soil is remarkably silty at 64.9%, with a low sand content of just 12.1%. This texture creates a smooth, flour-like soil that is excellent at holding the moisture and minerals plants need most.
Excellent Water Storage
The organic matter content is 2.80%, which is nearly on par with the state average. Most notably, the available water capacity of 0.209 in/in exceeds the Illinois average, providing a great buffer against drought.
Moisture-Retentive Ground
Specific drainage classifications are not provided, but the high silt content and water capacity indicate a soil that stays moist. This is ideal for thirsty crops like corn but may require attention to avoid overwatering in home gardens.
Garden-Ready in Zone 6a
Located in Hardiness Zone 6a, Logan County is well-suited for a variety of perennial flowers and vegetables. The balanced pH and superior water storage make it a reliable place to cultivate a lush backyard landscape.
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: Silt Loam
Typical soil profile. Actual depths vary by location.
USDA Soil Orders
Frequently Asked Questions
What type of soil does Logan County have?
Logan County's soil is classified as Silt Loam. This indicates the relative proportions of sand, silt, and clay — 12% sand, 65% silt, and 23% clay. Loamy soils hold moisture well and support a wide range of plants.
Is Logan County's soil acidic or alkaline?
Logan 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 Logan County?
Drainage class data is not currently available for Logan County.
What crops or plants grow well in Logan County's soil?
Based on Logan County's Silt Loam texture, pH of 6.6, 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 Logan County?
The dominant USDA soil order for Logan County is not currently available in our dataset.
Planning your lawn? View lawn care data for Logan County on LawnByCounty.com →
Other Counties in Illinois
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.