Stafford County Soil Data
Stafford County, Virginia
USDA SSURGO / PHZMAvg pH
5.1
Texture
Sandy Loam
Drainage
N/A
Organic Matter
1.9%
Hydrologic Group
N/A
Data Story
About Soil in Stafford County, Virginia
Stafford’s Acidic Sandy Earth
Stafford County has an average pH of 5.12, making it one of the more acidic soils in the region and notably lower than the state average of 5.23. The overall soil score of 25.7 sits below the state average of 30.6. These conditions mean that most garden plants will need supplemental lime to thrive.
Sand-Dominant Ground Structure
The soil contains 55.5% sand, 29.7% silt, and 14.8% clay. This high sand content provides a loose structure that is easy to dig but can struggle to hold onto nutrients. It is a very workable soil that doesn't suffer from the heavy, wet characteristics of high-clay areas.
Building Up Soil Health
Organic matter stands at 1.92%, which is below the state average of 2.90% and just under the national average. The available water capacity of 0.147 in/in is surprisingly healthy, slightly beating the state average. This means the soil can hold moisture well once it is properly amended.
Hydrology in the Coastal Transition
Drainage and hydrologic data are limited, but the sandy profile generally indicates good drainage for homes and farms. Water moves through the 55.5% sand fraction quickly, reducing the risk of standing water. Proper grading is still essential to manage runoff during heavy Virginia storms.
Cultivating in Zone 7a
Hardiness Zone 7a is perfect for a wide range of native plants and hardy vegetables. By adding organic matter, you can boost the 1.92% level and see a dramatic increase in plant health. Start your gardening journey by testing your pH and building your soil's foundation.
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: Sandy 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 Stafford County have?
Stafford County's soil is classified as Sandy Loam. This indicates the relative proportions of sand, silt, and clay — 56% sand, 30% silt, and 15% clay. Loamy soils hold moisture well and support a wide range of plants.
Is Stafford County's soil acidic or alkaline?
Stafford 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 Stafford County?
Drainage class data is not currently available for Stafford County.
What crops or plants grow well in Stafford County's soil?
Based on Stafford County's Sandy 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 Stafford County?
The dominant USDA soil order for Stafford County is not currently available in our dataset.
Soil & Planting Advisory: Stafford County
Soil Verdict
Stafford 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
Stafford County closely matches the Virginia average hardiness conditions. The zone range of 7a-7b within the county means soil and planting decisions should account for local elevation and topography.
Planning your lawn? View lawn care data for Stafford County on LawnByCounty.com →
Other Counties in Virginia
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.