Dorchester County Soil Data
Dorchester County, South Carolina
USDA SSURGO / PHZMAvg pH
5.0
Texture
Loamy Sand
Drainage
N/A
Organic Matter
3.7%
Hydrologic Group
N/A
Data Story
About Soil in Dorchester County, South Carolina
Acidic Soils with High Scores
Dorchester County maintains a soil score of 25.8, notably higher than the state average of 20.6. Its average pH of 5.02 is quite low compared to the national median of 6.5, reflecting its coastal chemical signature.
Light and Easy to Work
The soil composition is 74.9% sand, 13.5% silt, and 9.6% clay, creating a light texture that is easy to till. This mix allows for great root penetration, though it struggles to hold onto water compared to heavier clay soils.
Exceptional Organic Richness
The county boasts a high organic matter content of 3.69%, nearly double the national average of 2.0%. While available water capacity is slightly below state averages at 0.112 in/in, the rich organic profile provides a great foundation for growth.
Hydrology in the Lowcountry
Standard drainage classifications are not available for this county, but the 74.9% sand content suggests naturally fast percolation. The high soil score indicates that these lands are generally productive and versatile for regional land use.
Thriving in the 8b Heat
Hardiness zone 8b allows for a long growing season perfect for azaleas, camellias, and heat-tolerant vegetables. Your garden will benefit significantly from the county's superior organic matter levels.
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
Acidic Soil Detected
Your county's average pH is 5.0. These products help balance soil pH for healthier grass.
Browse Soil AmendmentsFrequently Asked Questions
What type of soil does Dorchester County have?
Dorchester County's soil is classified as Loamy Sand. This indicates the relative proportions of sand, silt, and clay — 75% sand, 13% silt, and 10% clay. Loamy soils hold moisture well and support a wide range of plants.
Is Dorchester County's soil acidic or alkaline?
Dorchester 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 Dorchester County?
Drainage class data is not currently available for Dorchester County.
What crops or plants grow well in Dorchester County's soil?
Based on Dorchester County's Loamy Sand 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 Dorchester County?
The dominant USDA soil order for Dorchester County is not currently available in our dataset.
Soil & Planting Advisory: Dorchester County
Soil Verdict
Dorchester County is in USDA hardiness zone 8b, a warm climate zone. where winter lows can reach 15°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. 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.
Regional Context
Dorchester County closely matches the South Carolina average hardiness conditions. The zone range of 8b-9a within the county means soil and planting decisions should account for local elevation and topography.
Planning your lawn? View lawn care data for Dorchester County on LawnByCounty.com →
Other Counties in South Carolina
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.