Adams County Soil Data
Adams County, Pennsylvania
USDA SSURGO / PHZMAvg pH
5.6
Texture
Silt Loam
Drainage
N/A
Organic Matter
2.4%
Hydrologic Group
N/A
Data Story
About Soil in Adams County, Pennsylvania
Acidic soils define the Adams County landscape
The county features an average pH of 5.60, which is significantly more acidic than the national median of 6.5. However, this level remains slightly less acidic than the Pennsylvania state average of 5.22. While taxonomic data is limited, these numbers suggest a landscape that favors acid-loving vegetation.
A silt-heavy mix balances workability
The soil contains 51.3% silt and 30.3% sand, creating a texture that is easy to work but prone to erosion. With only 16.8% clay, the soil offers moderate nutrient retention without becoming overly dense or heavy. This balance makes it well-suited for the county's famous fruit orchards.
Moderate organic matter supports local growth
Organic matter sits at 2.41%, which exceeds the national average of 2.0% but falls far below the state average of 12.14%. The available water capacity of 0.160 in/in is slightly higher than the state average of 0.151 in/in. These figures indicate a reliable reservoir for plant hydration during dry spells.
Managing moisture in unclassified terrain
Specific drainage and hydrologic group data are not available for this county. Given the high silt percentage, gardeners should watch for surface crusting after heavy rains. Local testing remains the best way to determine if your specific plot requires supplemental drainage.
Thriving in hardiness zone 7a
Adams County enjoys a warmer climate in zone 7a, perfect for its world-renowned apple and peach production. The combination of acidic soil and a long growing season provides a great foundation for diverse home gardens. Start your planting early to take full advantage of the mild spring weather.
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: Silt Loam
Typical soil profile. Actual depths vary by location.
USDA Soil Orders
Acidic Soil Detected
Your county's average pH is 5.6. These products help balance soil pH for healthier grass.
Browse Soil AmendmentsFrequently Asked Questions
What type of soil does Adams County have?
Adams County's soil is classified as Silt Loam. This indicates the relative proportions of sand, silt, and clay — 30% sand, 51% silt, and 17% clay. Loamy soils hold moisture well and support a wide range of plants.
Is Adams County's soil acidic or alkaline?
Adams County's soil has a pH of 5.6, which is moderately acidic. This range suits many crops and is common across much of the eastern US.
What is the drainage class for Adams County?
Drainage class data is not currently available for Adams County.
What crops or plants grow well in Adams County's soil?
Based on Adams County's Silt Loam texture, pH of 5.6, 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 Adams County?
The dominant USDA soil order for Adams County is not currently available in our dataset.
Soil & Planting Advisory: Adams County
Soil Verdict
Adams County is in USDA hardiness zone 7a, a moderate climate zone. where winter lows can reach 0°F. Mild winters mean soil rarely freezes deeply, allowing year-round microbial activity and faster organic matter breakdown.
Planting Guidance
Warm-season crops, citrus relatives, and heat-loving ornamentals do well. Cool-season vegetables should be planted in fall and winter. 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
Warm soils accelerate organic matter breakdown, so compost and mulch need replenishing more frequently than in cooler zones. Sandy soils common in warm zones drain quickly; water-retentive amendments like compost or peat help hold moisture. When soil temperatures drop below freezing, microbial nitrogen cycling stops; spring fertilization is more effective than late-fall application.
Regional Context
Adams County is somewhat warmer than the Pennsylvania statewide average. The zone range of 6b-7a within the county means soil and planting decisions should account for local elevation and topography.
Planning your lawn? View lawn care data for Adams County on LawnByCounty.com →
Other Counties in Pennsylvania
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.