Haskell County Soil Data
Haskell County, Oklahoma
USDA SSURGO / PHZMAvg pH
5.5
Texture
Loamy fine sand
Drainage
Well drained
Organic Matter
1.2%
Hydrologic Group
B
Data Story
About Soil in Haskell County, Oklahoma
The Acidic Alfisols of Haskell
Haskell County has a notably acidic pH of 5.48, well below both the state average of 6.06 and the national 6.5 median. The dominant taxonomic order is Alfisols, which are typically fertile forest soils but often require lime to balance their acidity. Its soil score of 25.5 suggests a more challenging landscape for traditional row crops.
Loamy Fine Sand with High Silt
The dominant texture is loamy fine sand, supported by 40.6% silt and 34.9% sand. With only 17.0% clay, this soil feels silty and smooth rather than sticky or heavy. This mix provides a unique physical structure that is relatively easy to till but can be prone to wind erosion if left uncovered.
Above Average Water Storage Capacity
The soil offers a strong available water capacity of 0.150 in/in, which is better than the Oklahoma average of 0.144 in/in. Organic matter is lower at 1.20%, sitting below the state's 1.72% average. This indicates that while the soil holds water effectively, it may need supplemental nitrogen and organic inputs.
Well Drained and Moderately Permeable
Unlike many neighbors, Haskell County is mostly 'Well drained' and belongs to Hydrologic Group B. This means it has a moderate infiltration rate, making it much better for building foundations and reducing runoff issues. This drainage profile is a significant asset for both gardening and land development.
A Haven for Acid-Loving Plants
The 7b hardiness zone and acidic pH are perfect for blueberries, azaleas, and strawberries. While the soil score of 25.5 is low, the excellent drainage offers a distinct advantage for many fruit-bearing plants. Gardeners can thrive here by leaning into the naturally acidic conditions of the local Alfisols.
Soil Composition
Soil pH
Soil Series
Detailed soil series data not yet available for this county.
Hydrologic Group
Group B — Moderate Runoff
Moderately deep, moderately well-drained soils with moderate infiltration rates. Good balance of drainage and water retention.
Drainage Class
Well drained
Water is removed from the soil readily but not rapidly. Optimal for most plants and construction.
Soil Profile
Dominant texture: Loamy fine sand
Typical soil profile. Actual depths vary by location.
USDA Soil Orders
Acidic Soil Detected
Your county's average pH is 5.5. These products help balance soil pH for healthier grass.
Browse Soil AmendmentsFrequently Asked Questions
What type of soil does Haskell County have?
Haskell County's soil is classified as Loamy fine sand. This indicates the relative proportions of sand, silt, and clay — 35% sand, 41% silt, and 17% clay. Loamy soils hold moisture well and support a wide range of plants.
Is Haskell County's soil acidic or alkaline?
Haskell County's soil has a low pH of 5.5, which is strongly acidic. Acidic soils benefit from lime applications to raise pH and improve nutrient availability.
What is the drainage class for Haskell County?
Haskell County has a dominant drainage class of "Well drained." Well-drained soils allow excess water to move through quickly, reducing waterlogging risk and supporting most field and garden crops.
What crops or plants grow well in Haskell County's soil?
Based on Haskell County's Loamy fine sand texture, pH of 5.5, and Well drained, the soil is well suited for acid-loving plants like blueberries and azaleas, row crops and vegetable gardens, most annual and perennial crops.
What USDA soil order is found in Haskell County?
Haskell County's dominant soil order is Alfisols. Alfisols are moderate to high base-status soils with a clay-enriched subsoil. They support productive forests and cropland across temperate regions.
Soil & Planting Advisory: Haskell County
Soil Verdict
Haskell County is in USDA hardiness zone 7b, a moderate climate zone. where winter lows can reach 5°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
Haskell County closely matches the Oklahoma average hardiness conditions.
Planning your lawn? View lawn care data for Haskell County on LawnByCounty.com →
Other Counties in Oklahoma
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.