Clark County Soil Data
Clark County, Idaho
USDA SSURGO / PHZMAvg pH
N/A
Texture
Unknown
Drainage
N/A
Organic Matter
N/A
Hydrologic Group
N/A
Data Story
About Soil in Clark County, Idaho
Awaiting Local Soil Taxonomic Data
Clark County's specific soil taxonomic data is not currently recorded in this dataset. While local pH levels are unknown, they exist within a state where the average pH is 6.04, slightly lower than the national 6.5 median.
Analyzing Sand, Silt, and Clay Ratios
Specific percentages for sand, silt, and clay remain unavailable for this county. Without these recorded ratios, local growers should perform manual tests to determine drainage and workability.
Measuring Fertility Against Idaho Averages
Organic matter data is missing here, but Idaho as a whole averages an impressive 27.53%. This state-wide benchmark suggests high potential compared to the 2.0% national organic matter average.
Understanding Drainage and Hydrologic Movement
The dominant drainage class for Clark County is currently unlisted. Understanding these hydrologic groups is essential for preventing runoff and planning stable infrastructure projects.
Gardening in Cold-Hardy Zone 5b
Clark County is located in USDA Hardiness Zone 5b. Gardeners can successfully grow cool-season vegetables like kale and radishes in this high-altitude 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
Typical soil profile. Actual depths vary by location.
USDA Soil Orders
Soil Amendment Products
Browse products to improve your soil health and lawn performance.
Browse Soil AmendmentsFrequently Asked Questions
What type of soil does Clark County have?
Clark 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 Clark County's soil acidic or alkaline?
pH data is not available for Clark County.
What is the drainage class for Clark County?
Drainage class data is not currently available for Clark County.
What crops or plants grow well in Clark County's soil?
Based on Clark 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 Clark County?
The dominant USDA soil order for Clark County is not currently available in our dataset.
Soil & Planting Advisory: Clark County
Soil Verdict
Clark 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
Clark County is somewhat cooler than the Idaho statewide average.
Planning your lawn? View lawn care data for Clark County on LawnByCounty.com →
Other Counties in Idaho
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.