Isanti County Soil Data
Isanti County, Minnesota
USDA SSURGO / PHZMAvg pH
5.5
Texture
Sandy Loam
Drainage
N/A
Organic Matter
9.0%
Hydrologic Group
N/A
Data Story
About Soil in Isanti County, Minnesota
Low pH in Isanti's Sandy Soil
Isanti County has a fairly acidic pH of 5.51, well below the national median of 6.5. This acidity, combined with a soil score of 61.6, indicates a landscape that may require soil amendments like lime for traditional garden crops.
A Predominantly Sandy Composition
The soil is 55.1% sand, which leads to a gritty texture and fast-warming soil in the spring. Silt makes up 29.1% of the mix, while clay is low at 9.4%, making the soil easy to work but prone to rapid drying.
Strong Organic Matter Levels
Organic matter is high at 9.02%, nearly reaching the Minnesota state average of 9.9%. This richness is vital for plant health, especially since the available water capacity of 0.182 in/in is slightly lower than the state benchmark.
Quick Drying for Spring Planting
The 55.1% sand content means the soil drains rapidly, preventing it from becoming waterlogged after heavy rains. This is ideal for builders, but gardeners should monitor soil moisture closely during the peak of summer.
Root Vegetables Thrive in Zone 4b
The sandy texture of Zone 4b is perfect for root vegetables like carrots and parsnips. Get a head start on your garden by taking advantage of how quickly this sandy soil warms up in the sun.
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 5.5. These products help balance soil pH for healthier grass.
Browse Soil AmendmentsFrequently Asked Questions
What type of soil does Isanti County have?
Isanti County's soil is classified as Sandy Loam. This indicates the relative proportions of sand, silt, and clay — 55% sand, 29% silt, and 9% clay. Loamy soils hold moisture well and support a wide range of plants.
Is Isanti County's soil acidic or alkaline?
Isanti County's soil has a pH of 5.5, which is moderately acidic. This range suits many crops and is common across much of the eastern US.
What is the drainage class for Isanti County?
Drainage class data is not currently available for Isanti County.
What crops or plants grow well in Isanti County's soil?
Based on Isanti County's Sandy Loam texture, pH of 5.5, 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 Isanti County?
The dominant USDA soil order for Isanti County is not currently available in our dataset.
Soil & Planting Advisory: Isanti County
Soil Verdict
Isanti County is in USDA hardiness zone 4b, a cold climate zone. where winter lows can reach -25°F. Soils here experience deep freeze cycles that can disrupt structure, kill shallow roots, and slow microbial activity for months each year.
Planting Guidance
Focus on cold-hardy perennials, native grasses, and conifers. The short growing window favors plants with low heat requirements. 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
Deep winter freezing can create soil heaving that pushes shallow-rooted plants out of the ground; add 3-4 inches of organic mulch each fall. Soil drainage is critical — frozen, waterlogged soil kills roots faster than cold alone. When soil temperatures drop below freezing, microbial nitrogen cycling stops; spring fertilization is more effective than late-fall application.
Regional Context
Isanti County closely matches the Minnesota average hardiness conditions.
Planning your lawn? View lawn care data for Isanti County on LawnByCounty.com →
Other Counties in Minnesota
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.