Green County Soil Data
Green County, Wisconsin
USDA SSURGO / PHZMAvg pH
6.2
Texture
Silt Loam
Drainage
N/A
Organic Matter
3.4%
Hydrologic Group
N/A
Data Story
About Soil in Green County, Wisconsin
Favorable Soil pH for Diverse Crops
Green County soil has a pH of 6.17, which is notably less acidic than the state average of 5.63. This places it near the national 6.5 median, creating a fertile environment that requires fewer chemical adjustments.
High Silt Content Offers Great Structure
The soil is comprised of 52.5% silt and 17.4% clay, making it some of the most nutrient-dense land in the region. This fine-textured mix provides a stable home for roots and excellent cation exchange capacity.
Beating State Water Storage Averages
The available water capacity of 0.208 is higher than the state average, meaning this soil acts as a superior reservoir for plants. Organic matter at 3.38% is also well above the national 2.0% benchmark.
Consistent Moisture for Dairy Land
Though specific drainage categories are not provided, the heavy silt and clay presence ensures the soil doesn't dry out too quickly. This helps maintain the lush pastures that have made the county famous for its agriculture.
Top-Tier Growing in Zone 5a
A soil score of 74.9 makes Green County one of the most productive areas for gardeners and farmers alike. In Zone 5a, you can expect great success with everything from specialty grains to diverse kitchen gardens.
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: Silt Loam
Typical soil profile. Actual depths vary by location.
USDA Soil Orders
Soil Amendment Products
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Browse Soil AmendmentsFrequently Asked Questions
What type of soil does Green County have?
Green County's soil is classified as Silt Loam. This indicates the relative proportions of sand, silt, and clay — 27% sand, 53% silt, and 17% clay. Loamy soils hold moisture well and support a wide range of plants.
Is Green County's soil acidic or alkaline?
Green County's soil has a pH of 6.2, which is moderately acidic. This range suits many crops and is common across much of the eastern US.
What is the drainage class for Green County?
Drainage class data is not currently available for Green County.
What crops or plants grow well in Green County's soil?
Based on Green County's Silt Loam texture, pH of 6.2, and drainage class, the soil is well suited for vegetables, grains, and most field crops, row crops and vegetable gardens.
What USDA soil order is found in Green County?
The dominant USDA soil order for Green County is not currently available in our dataset.
Soil & Planting Advisory: Green County
Soil Verdict
Green County is in USDA hardiness zone 5a, a cold climate zone. where winter lows can reach -20°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. With extreme winter lows, any marginally hardy plants need heavy mulch and wind protection. 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
Green County closely matches the Wisconsin average hardiness conditions. The zone range of 5a-5b within the county means soil and planting decisions should account for local elevation and topography.
Planning your lawn? View lawn care data for Green County on LawnByCounty.com →
Other Counties in Wisconsin
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.