Sweetwater County Soil Data
Sweetwater 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 Sweetwater County, Wyoming
Alkaline Potential in the High Desert
Detailed pH and taxonomic data are not currently available for Sweetwater County. Typical for the region, these desert soils are likely more alkaline than the national median of 6.5.
Unmapped Textures of the Basin
The specific breakdown of sand, silt, and clay is missing from our current database. Local gardeners should look for sandy characteristics, which are common across the Sweetwater river basin.
Growing Against the Odds
Specific organic matter levels are not recorded, so we cannot compare them to the 5.40% Wyoming average. Adding organic amendments is the best way to improve the fertility of these arid soils.
Managing Water in Arid Land
Drainage and hydrologic data are unavailable for this county. In desert climates, managing salt accumulation is often as important as managing the water itself.
Resilient Gardening in Zone 5b
Zone 5b allows for a variety of perennials and hardy vegetables if you can manage the wind. Start your garden with windbreaks and plenty of mulch to conserve every drop of moisture.
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 Sweetwater County have?
Sweetwater 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 Sweetwater County's soil acidic or alkaline?
pH data is not available for Sweetwater County.
What is the drainage class for Sweetwater County?
Drainage class data is not currently available for Sweetwater County.
What crops or plants grow well in Sweetwater County's soil?
Based on Sweetwater 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 Sweetwater County?
The dominant USDA soil order for Sweetwater County is not currently available in our dataset.
Soil & Planting Advisory: Sweetwater County
Soil Verdict
Sweetwater County is in USDA hardiness zone 5b, a cold climate zone. where winter lows can reach -15°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
Sweetwater County closely matches the Wyoming average hardiness conditions. The zone range of 4a-5b within the county means soil and planting decisions should account for local elevation and topography.
Planning your lawn? View lawn care data for Sweetwater 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.