Aroostook County Soil Data
Aroostook County, Maine
USDA SSURGO / PHZMAvg pH
N/A
Texture
Unknown
Drainage
N/A
Organic Matter
N/A
Hydrologic Group
N/A
Data Story
About Soil in Aroostook County, Maine
The Crown's Agricultural Base
Famous for its agricultural heritage, this northern county's soil profile is often defined by deep silt loams. Like much of the state, these soils tend toward the acidic side compared to the national 6.5 pH median.
Renowned Silt Loam Texture
While precise sand and clay percentages are missing from the current data, the region is renowned for its Caribou loam texture. This legendary mix provides the structure needed for large-scale potato cultivation and root health.
Rich Biological Farming Foundations
Organic matter levels here likely mirror or exceed the high state average of 35.77%. This rich biological content supports the intensive farming that defines the local economy and food system.
Naturally Moving Northern Waters
Mapped drainage data is limited, but the region’s rolling topography typically aids natural water movement. Farmers here rely on careful management to ensure fields dry out quickly during the short northern spring.
Short Seasons in Zone 4a
At Hardiness Zone 4a, Aroostook demands cold-hardy varieties and short-season crops. Potatoes remain the local king, but the soil also supports excellent yields of oats, barley, and broccoli.
Soil Composition
Composition data not available for this county.
Soil pH
pH data not available for this county.
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: Unknown
Typical soil profile. Actual depths vary by location.
USDA Soil Orders
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Browse Soil AmendmentsFrequently Asked Questions
What type of soil does Aroostook County have?
Aroostook County's soil is classified as Unknown. This indicates the relative proportions of sand, silt, and clay — sand percentage unavailable, silt percentage unavailable, and clay percentage unavailable. Sandy soils drain quickly but may need more frequent irrigation and fertilization.
Is Aroostook County's soil acidic or alkaline?
pH data is not available for Aroostook County.
What is the drainage class for Aroostook County?
Drainage class data is not currently available for Aroostook County.
What crops or plants grow well in Aroostook County's soil?
Based on Aroostook County's Unknown texture, soil pH, and drainage class, the soil is well suited for a variety of crops depending on local conditions.
What USDA soil order is found in Aroostook County?
The dominant USDA soil order for Aroostook County is not currently available in our dataset.
Soil & Planting Advisory: Aroostook County
Soil Verdict
Aroostook County is in USDA hardiness zone 4a, a cold climate zone. where winter lows can reach -30°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
Aroostook County is somewhat cooler than the Maine statewide average. The zone range of 4a-5a within the county means soil and planting decisions should account for local elevation and topography.
Planning your lawn? View lawn care data for Aroostook County on LawnByCounty.com →
Other Counties in Maine
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.