Rock County Soil Data
Rock County, Nebraska
USDA SSURGO / PHZMAvg pH
6.6
Texture
Loamy Sand
Drainage
N/A
Organic Matter
2.7%
Hydrologic Group
N/A
Data Story
About Soil in Rock County, Nebraska
Neutral and Extremely Sandy Soils
Rock County soil maintains a pH of 6.63, which sits comfortably near the national median of 6.5 and just below the state average of 6.79. While the taxonomic order data is currently unavailable, the chemical profile is neutral and balanced. This makes it versatile for a range of Nebraska plant species.
A Gritty, Sand-Dominant Profile
This soil is incredibly sandy, containing 79.4% sand and only 7.4% clay. This high sand content creates a gritty texture that offers very little resistance to root growth. However, such a high sand percentage means nutrients can wash through the soil quickly.
Moderate Organic Matter, Low Storage
Organic matter is decent at 2.74%, exceeding the national average of 2.0%. Unfortunately, the available water capacity is quite low at 0.112 in/in compared to the state average of 0.172. This indicates that despite the organic content, the soil struggles to hold onto moisture.
Rapid Drainage Characteristics
Though specific hydrologic classes are not listed, a 79% sand composition naturally results in rapid drainage. Water moves through these soils quickly, which prevents root rot but requires frequent replenishment. Builders will find these soils stable, though farmers must manage irrigation carefully.
Prairie Plants Thrive in 5a
In hardiness zone 5a, native prairie grasses and drought-tolerant plants are the most successful choices. The sandy soil is perfect for root vegetables like carrots if they receive consistent water. Consider using mulch to help maintain the limited moisture these soils can hold.
Soil Composition
Soil pH
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: Loamy Sand
Typical soil profile. Actual depths vary by location.
USDA Soil Orders
Sandy Soil Detected
Sandy soils drain quickly and can dry out. These products boost water retention and organic matter.
Browse Soil AmendmentsFrequently Asked Questions
What type of soil does Rock County have?
Rock County's soil is classified as Loamy Sand. This indicates the relative proportions of sand, silt, and clay — 79% sand, 12% silt, and 7% clay. Loamy soils hold moisture well and support a wide range of plants.
Is Rock County's soil acidic or alkaline?
Rock County's soil has a pH of 6.6, which is near neutral. This range is ideal for most garden plants and field crops.
What is the drainage class for Rock County?
Drainage class data is not currently available for Rock County.
What crops or plants grow well in Rock County's soil?
Based on Rock County's Loamy Sand texture, pH of 6.6, and drainage class, the soil is well suited for vegetables, grains, and most field crops, row crops and vegetable gardens.
What USDA soil order is found in Rock County?
The dominant USDA soil order for Rock County is not currently available in our dataset.
Soil & Planting Advisory: Rock County
Soil Verdict
Rock 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
Rock County closely matches the Nebraska average hardiness conditions.
Planning your lawn? View lawn care data for Rock County on LawnByCounty.com →
Other Counties in Nebraska
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.