Mercer County Soil Data
Mercer County, New Jersey
Avg pH
5.0
Texture
Loam
Drainage
N/A
Organic Matter
5.9%
Hydrologic Group
N/A
Data Story
About Soil in Mercer County, New Jersey
Moderate Acidity Near the State Capital
Mercer County's soil registers an average pH of 5.00, sitting comfortably between the national median of 6.5 and the state average of 4.24. This moderately acidic profile is typical for the transitional landscape of central New Jersey. It provides a stable foundation for both suburban landscapes and remaining agricultural tracts.
A Balanced Blend of Silt and Sand
The mineral makeup includes 42.6% silt and 40.5% sand, with a 14.7% clay component. This nearly even split between silt and sand creates a soil that is easy to till and well-aerated. The clay content is high enough to provide the necessary structure for plant roots.
Strong Organic Matter Levels
At 5.91% organic matter, Mercer's soil is nearly triple the national average of 2.0%. The available water capacity is 0.161 in/in, which is just slightly below the New Jersey state average of 0.168. This combination supports healthy plant growth with decent moisture management during the summer months.
Stable Water Dynamics
Though specific drainage classes are unlisted, the 40.5% sand content ensures that water moves through the profile at a steady rate. The 14.7% clay prevents the soil from drying out too quickly compared to coastal neighbors. This balance makes Mercer's land versatile for both building and gardening.
Thriving in the Heart of Jersey
The 7a hardiness zone supports a wide variety of perennials and seasonal vegetables. Tomatoes and peppers do exceptionally well in this silty-sand mix once the spring soil warms up. You can start your garden with confidence knowing the organic matter levels are naturally high.
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
Frequently Asked Questions
What type of soil does Mercer County have?
Mercer County's soil is classified as Loam. This indicates the relative proportions of sand, silt, and clay — 41% sand, 43% silt, and 15% clay. Loamy soils hold moisture well and support a wide range of plants.
Is Mercer County's soil acidic or alkaline?
Mercer County's soil has a low pH of 5.0, which is strongly acidic. Acidic soils benefit from lime applications to raise pH and improve nutrient availability.
What is the drainage class for Mercer County?
Drainage class data is not currently available for Mercer County.
What crops or plants grow well in Mercer County's soil?
Based on Mercer County's Loam texture, pH of 5.0, 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 Mercer County?
The dominant USDA soil order for Mercer County is not currently available in our dataset.
Planning your lawn? View lawn care data for Mercer County on LawnByCounty.com →
Other Counties in New Jersey
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.