Osage County Soil Data
Osage County, Missouri
USDA SSURGO / PHZMAvg pH
6.3
Texture
Silt loam
Drainage
Well drained
Organic Matter
2.3%
Hydrologic Group
C
Data Story
About Soil in Osage County, Missouri
The Alfisols of Osage County
Osage County is dominated by Alfisols, which are naturally productive soils typically found under forest cover. With an average pH of 6.28, these soils are more neutral than the state average of 6.09 and close to the national median of 6.5. This chemical balance contributes to a respectable overall soil score of 64.9.
Dominant Silt Loam Texture
The county features a classic silt loam texture, driven by a high silt content of 65.0%. Sand makes up 15.5% and clay accounts for 19.0%, creating a mix that offers excellent workability and moderate nutrient storage. This texture is highly prized by farmers for its ability to produce a fine seedbed.
Excellent Water Storage Capacity
Osage County boasts an available water capacity of 0.192 in/in, outperforming the Missouri state average of 0.183 in/in. While the organic matter is relatively low at 2.28% compared to the state’s 4.74%, the soil’s ability to hold water provides a safety net during dry spells. Improving organic matter through composting could significantly boost its already high growing potential.
Reliable Well-Drained Landscapes
The land is categorized as well-drained, which is ideal for preventing the root rot and aeration issues common in wetter regions. It belongs to hydrologic group C, indicating that while it drains well, it has a slower rate of water transmission when fully saturated. This makes the county generally suitable for most agricultural and construction activities.
Gardening Success in Zone 6b
In USDA Hardiness Zone 6b, Osage County is perfect for a wide variety of vegetables, fruit trees, and ornamental shrubs. The silt loam texture and neutral pH mean you can plant almost anything with minimal soil correction. Whether you are a hobbyist or a professional, these Alfisols provide a dependable foundation for growth.
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
Well drained
Water is removed from the soil readily but not rapidly. Optimal for most plants and construction.
Soil Profile
Dominant texture: Silt loam
Typical soil profile. Actual depths vary by location.
USDA Soil Orders
Soil Amendment Products
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Browse Soil AmendmentsFrequently Asked Questions
What type of soil does Osage County have?
Osage County's soil is classified as Silt loam. This indicates the relative proportions of sand, silt, and clay — 16% sand, 65% silt, and 19% clay. Loamy soils hold moisture well and support a wide range of plants.
Is Osage County's soil acidic or alkaline?
Osage County's soil has a pH of 6.3, which is moderately acidic. This range suits many crops and is common across much of the eastern US.
What is the drainage class for Osage County?
Osage 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 Osage County's soil?
Based on Osage County's Silt loam texture, pH of 6.3, and Well drained, the soil is well suited for vegetables, grains, and most field crops, row crops and vegetable gardens, most annual and perennial crops.
What USDA soil order is found in Osage County?
Osage 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.
Soil & Planting Advisory: Osage County
Soil Verdict
Osage County is in USDA hardiness zone 6b, a moderate climate zone. where winter lows can reach -5°F. Freeze-thaw cycles are moderate; soil biology slows in winter but recovers reliably in spring, supporting a broad range of plants.
Planting Guidance
A wide plant palette is possible: deciduous trees, most shrubs, cool-season vegetables, and many perennials thrive here. 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
Moderate freeze-thaw cycles naturally aerate the soil but can also cause compaction in clay-heavy areas; annual core aeration is beneficial. Organic matter amendments decompose at a moderate pace — aim for 3-5% organic content for optimal fertility. When soil temperatures drop below freezing, microbial nitrogen cycling stops; spring fertilization is more effective than late-fall application.
Regional Context
Osage County closely matches the Missouri average hardiness conditions.
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Other Counties in Missouri
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.