Oswego County Soil Data
Oswego County, New York
USDA SSURGO / PHZMAvg pH
5.1
Texture
Loam
Drainage
N/A
Organic Matter
21.4%
Hydrologic Group
N/A
Data Story
About Soil in Oswego County, New York
The Sandy Acidic Soils of Oswego
Oswego County has an average pH of 5.14, mirroring the New York state average of 5.11. With a soil score of 55.9, it offers a distinct growing environment compared to its more neutral neighbors. The soil chemistry here is typical of the northern woodlands and lake-adjacent plains.
High Sand Content for Fast Drainage
Oswego stands out with a high sand content of 51.3%, making it much coarser than many New York counties. Silt makes up 25.4% and clay only 9.2%, resulting in a light, loose soil texture. This composition allows for quick warming in the spring and easy cultivation.
Rich Organic Reserves in Sandy Ground
Despite the high sand content, organic matter is very high at 21.37%, well above the state average. This organic boost helps maintain an available water capacity of 0.178 in/in, preventing the sand from drying out too rapidly. This unique blend creates a highly fertile environment for specific crop types.
Managing Rapid Percolation
With over 50% sand, water moves through this soil quickly, which reduces the risk of root rot but increases the need for consistent watering. While specific hydrologic group data is missing, the physical makeup suggests it is a well-drained profile. This makes the county excellent for building, but gardeners should mulch to retain moisture.
Hardy Growing in Zone 5b
Oswego’s Zone 5b is perfect for berries, root vegetables, and coniferous trees that prefer sandy, acidic conditions. Blueberries and strawberries especially love the high organic matter and fast-draining sand found here. Dig into your sandy soil today and see how quickly your garden can grow.
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: Loam
Typical soil profile. Actual depths vary by location.
USDA Soil Orders
Acidic Soil Detected
Your county's average pH is 5.1. These products help balance soil pH for healthier grass.
Browse Soil AmendmentsFrequently Asked Questions
What type of soil does Oswego County have?
Oswego County's soil is classified as Loam. This indicates the relative proportions of sand, silt, and clay — 51% sand, 25% silt, and 9% clay. Loamy soils hold moisture well and support a wide range of plants.
Is Oswego County's soil acidic or alkaline?
Oswego County's soil has a low pH of 5.1, which is strongly acidic. Acidic soils benefit from lime applications to raise pH and improve nutrient availability.
What is the drainage class for Oswego County?
Drainage class data is not currently available for Oswego County.
What crops or plants grow well in Oswego County's soil?
Based on Oswego County's Loam texture, pH of 5.1, and drainage class, the soil is well suited for acid-loving plants like blueberries and azaleas, row crops and vegetable gardens.
What USDA soil order is found in Oswego County?
The dominant USDA soil order for Oswego County is not currently available in our dataset.
Soil & Planting Advisory: Oswego County
Soil Verdict
Oswego 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
Oswego County is somewhat cooler than the New York statewide average. The zone range of 4b-6a within the county means soil and planting decisions should account for local elevation and topography.
Planning your lawn? View lawn care data for Oswego County on LawnByCounty.com →
Other Counties in New York
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.