Porter County Soil Data
Porter County, Indiana
USDA SSURGO / PHZMAvg pH
5.4
Texture
Silt loam
Drainage
Poorly drained
Organic Matter
9.8%
Hydrologic Group
B/D
Data Story
About Soil in Porter County, Indiana
Highly Acidic Soils of the North
Porter County’s silt loam soils are quite acidic, with a pH of 5.41. This is significantly lower than both the state average and the national median of 6.5, suggesting these Entisols have unique chemical properties.
Sandy Texture Near the Lake
The soil contains a high sand content of 42.4%, which is balanced by 33.3% silt. This high sand percentage provides excellent workability and aeration, though it can lead to faster water loss in the upper layers.
Massive Organic Matter Concentration
Porter County features an incredible 9.76% organic matter, nearly double the state average. However, the available water capacity is lower at 0.188 in/in, meaning the soil may dry out faster than the Indiana average of 0.202.
Managing Poor Drainage and Runoff
These soils are poorly drained and fall into hydrologic group B/D. This means the soil has high potential for runoff when wet, despite having some layers that allow for moderate water movement.
Acid-Loving Plants in Zone 6a
In USDA zone 6a, the acidic, organic-rich soil is perfect for blueberries, azaleas, and rhododendrons. While the soil score is 62.0, these specific characteristics make it a unique and rewarding place to garden.
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
Poorly drained
Water is removed so slowly that the soil is wet at or near the surface much of the year. Drainage improvement usually needed.
Soil Profile
Dominant texture: Silt loam
Typical soil profile. Actual depths vary by location.
USDA Soil Orders
Acidic Soil Detected
Your county's average pH is 5.4. These products help balance soil pH for healthier grass.
Browse Soil AmendmentsFrequently Asked Questions
What type of soil does Porter County have?
Porter County's soil is classified as Silt loam. This indicates the relative proportions of sand, silt, and clay — 42% sand, 33% silt, and 12% clay. Loamy soils hold moisture well and support a wide range of plants.
Is Porter County's soil acidic or alkaline?
Porter County's soil has a low pH of 5.4, which is strongly acidic. Acidic soils benefit from lime applications to raise pH and improve nutrient availability.
What is the drainage class for Porter County?
Porter County has a dominant drainage class of "Poorly drained." Poorly drained soils retain water for extended periods, which can limit crop choices and may require tile drainage or raised beds.
What crops or plants grow well in Porter County's soil?
Based on Porter County's Silt loam texture, pH of 5.4, and Poorly drained, the soil is well suited for acid-loving plants like blueberries and azaleas, row crops and vegetable gardens, rice, cranberries, and other water-tolerant species.
What USDA soil order is found in Porter County?
Porter County's dominant soil order is Entisols. Entisols are recently formed soils with little to no horizon development. They are common on floodplains, steep slopes, and sandy deposits.
Soil & Planting Advisory: Porter County
Soil Verdict
Porter County is in USDA hardiness zone 6a, a moderate climate zone. where winter lows can reach -10°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
Porter County closely matches the Indiana average hardiness conditions. The zone range of 5b-6a within the county means soil and planting decisions should account for local elevation and topography.
Planning your lawn? View lawn care data for Porter County on LawnByCounty.com →
Other Counties in Indiana
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.