Pennington County Soil Data
Pennington County, South Dakota
USDA SSURGO / PHZMAvg pH
N/A
Texture
Unknown
Drainage
N/A
Organic Matter
N/A
Hydrologic Group
N/A
Data Story
About Soil in Pennington County, South Dakota
Diverse Landscapes of Pennington County
Detailed county-wide taxonomic data and pH levels are not currently available in the summarized dataset. The county spans from the Black Hills to the Badlands, resulting in highly variable soil identities. Local testing is essential to understand the specific chemical profile of your land.
A Mosaic of Soil Textures
Primary data for sand, silt, and clay percentages is missing for this county-wide profile. Because the terrain ranges from forested mountains to prairie, the soil composition varies from rocky outcrops to deep silts. Landowners should expect different drainage and nutrient needs depending on their elevation.
Gauging Growth Potential
There is currently no reported data for average organic matter or available water capacity in Pennington. However, the state average organic matter of 3.75% serves as a high benchmark for regional goals. Improving soil health through composting is a standard practice for successful gardening in this area.
Water Movement Across the Hills
Hydrologic groups and drainage classes are currently unlisted for the county. In the shadow of the Black Hills, water movement is largely dictated by slope and rock content rather than just soil texture. Careful site planning is required for any building or irrigation projects due to this topographical variety.
Gardening Near the Peaks in Zone 5a
Zone 5a status means Pennington County can support a wide array of fruits and vegetables, from apples to squash. The diverse climate zones created by the mountains offer unique microclimates for adventurous gardeners. Focus on hardy varieties and use raised beds to overcome local soil variability.
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 Pennington County have?
Pennington 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 Pennington County's soil acidic or alkaline?
pH data is not available for Pennington County.
What is the drainage class for Pennington County?
Drainage class data is not currently available for Pennington County.
What crops or plants grow well in Pennington County's soil?
Based on Pennington 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 Pennington County?
The dominant USDA soil order for Pennington County is not currently available in our dataset.
Soil & Planting Advisory: Pennington County
Soil Verdict
Pennington 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
Pennington County is somewhat warmer than the South Dakota statewide average. The zone range of 4b-5b within the county means soil and planting decisions should account for local elevation and topography.
Planning your lawn? View lawn care data for Pennington County on LawnByCounty.com →
Other Counties in South Dakota
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.