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McLean County Soil Data

McLean County, Kentucky

USDA SSURGO / PHZM

Avg pH

N/A

Texture

Unknown

Drainage

N/A

Organic Matter

N/A

Hydrologic Group

N/A

Data Story

About Soil in McLean County, Kentucky

A Mystery in the Western Coalfields

While specific taxonomic data for McLean County is currently limited, regional profiles suggest the acidic soil common to Western Kentucky. Local growers should expect a pH level that requires management to reach the national median of 6.5.

Fine-Grained River Valley Deposits

Detailed sand and clay percentages are not recorded, but the county's proximity to the Green River typically results in silty textures. These soils often provide a balance between moisture retention and workability for row crops.

Building on State Benchmarks

Without specific local metrics, farmers can look to the Kentucky state average organic matter of 3.55% as a target for soil health. Maintaining high water capacity is essential to sustain crops through the humid summers.

Managing Water in the Lowlands

Specific drainage classes are unavailable, but the local topography often necessitates drainage management for optimal farming. Understanding your specific plot's hydrologic group is the first step toward successful land use.

Abundant Growth in Zone 7a

McLean County sits in Hardiness Zone 7a, offering a long growing season for corn, soybeans, and summer vegetables. Start your garden today with heat-loving crops like peppers and tomatoes that thrive in this climate.

Soil Composition

Composition data not available for this county.

Soil pH

pH data not available for this county.

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: Unknown

O HorizonOrganic layer
0-2"
A HorizonTopsoil
2-10"
B HorizonSubsoil
10-30"
C HorizonParent material
30-60"
R HorizonBedrock
60"+

Typical soil profile. Actual depths vary by location.

Soil Amendment Products

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Frequently Asked Questions

What type of soil does McLean County have?

McLean County's soil is classified as Unknown. This indicates the relative proportions of sand, silt, and clay — sand percentage unavailable, silt percentage unavailable, and clay percentage unavailable. Sandy soils drain quickly but may need more frequent irrigation and fertilization.

Is McLean County's soil acidic or alkaline?

pH data is not available for McLean County.

What is the drainage class for McLean County?

Drainage class data is not currently available for McLean County.

What crops or plants grow well in McLean County's soil?

Based on McLean County's Unknown texture, soil pH, and drainage class, the soil is well suited for a variety of crops depending on local conditions.

What USDA soil order is found in McLean County?

The dominant USDA soil order for McLean County is not currently available in our dataset.

Soil & Planting Advisory: McLean County

Soil Verdict

McLean County is in USDA hardiness zone 7a, a moderate climate zone. where winter lows can reach 0°F. Mild winters mean soil rarely freezes deeply, allowing year-round microbial activity and faster organic matter breakdown.

Planting Guidance

Warm-season crops, citrus relatives, and heat-loving ornamentals do well. Cool-season vegetables should be planted in fall and winter. Winter protection (mulch, burlap wraps) helps push the zone boundary for desired species. Always match plant selections to the specific microclimate of your property — low spots, slopes, and wind exposure can shift effective hardiness by half a zone.

Soil Implications

Warm soils accelerate organic matter breakdown, so compost and mulch need replenishing more frequently than in cooler zones. Sandy soils common in warm zones drain quickly; water-retentive amendments like compost or peat help hold moisture. When soil temperatures drop below freezing, microbial nitrogen cycling stops; spring fertilization is more effective than late-fall application.

Regional Context

McLean County closely matches the Kentucky average hardiness conditions.

Other Counties in Kentucky

By Evan Brooks, Data EditorUpdated Reviewed by Evan Brooks, Data Editor

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.