Johnson County Soil Data
Johnson County, Wyoming
USDA SSURGO / PHZMAvg pH
N/A
Texture
Unknown
Drainage
N/A
Organic Matter
N/A
Hydrologic Group
N/A
Data Story
About Soil in Johnson County, Wyoming
Undiscovered Soil Depths in Johnson
Johnson County's dominant soil identity remains unclassified in standard digital surveys, necessitating local testing for precise pH levels. Most Wyoming soils trend alkaline, exceeding the national median pH of 6.5.
Observing the Mix Underfoot
Specific data for sand, silt, and clay are currently limited for this region. Local observations of soil 'feel' are the best way to determine if your land drains quickly like sand or holds water like clay.
Strategies for High-Altitude Growth
The county lacks a formal fertility score, but growers can compare their results to the state's average 0.165 in/in water capacity. Amending the soil with organic matter helps push local land toward the national average of 2.0%.
Water Movement and Land Use
Drainage classes are not yet mapped for this county, making on-site percolation tests essential for new projects. Proper drainage is the key to preventing salt buildup in Wyoming's semi-arid environment.
Growing in Hardiness Zone 5a
Johnson County falls into Zone 5a, offering a slightly longer growing season than its neighbors to the west. Cold-tolerant vegetables and native shrubs flourish here with consistent watering and care.
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
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 Johnson County have?
Johnson 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 Johnson County's soil acidic or alkaline?
pH data is not available for Johnson County.
What is the drainage class for Johnson County?
Drainage class data is not currently available for Johnson County.
What crops or plants grow well in Johnson County's soil?
Based on Johnson 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 Johnson County?
The dominant USDA soil order for Johnson County is not currently available in our dataset.
Soil & Planting Advisory: Johnson County
Soil Verdict
Johnson County is in USDA hardiness zone 5a, a cold climate zone. where winter lows can reach -20°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. With extreme winter lows, any marginally hardy plants need heavy mulch and wind protection. 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
Johnson County closely matches the Wyoming average hardiness conditions.
Planning your lawn? View lawn care data for Johnson County on LawnByCounty.com →
Other Counties in Wyoming
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.