Cumberland County Soil Data
Cumberland County, Maine
USDA SSURGO / PHZMAvg pH
3.9
Texture
Loam
Drainage
N/A
Organic Matter
44.2%
Hydrologic Group
N/A
Data Story
About Soil in Cumberland County, Maine
Strongly Acidic Coastal Soil
Cumberland’s soil is highly acidic, with an average pH of 3.86 that sits well below the national median of 6.5. This low pH is typical for Maine’s forest-derived soils but requires management for most traditional garden crops.
Coarse and Workable Mix
The soil consists of 29.0% sand, 21.5% silt, and a low 5.8% clay. This light, coarse mix ensures easy workability and prevents the heavy compaction often found in clay-rich agricultural regions.
Exceptional Organic Matter Levels
Organic matter is impressively high at 44.22%, far exceeding the state average of 35.77%. With an Available Water Capacity of 0.257 in/in, these soils hold moisture exceptionally well for thirsty plants.
Fast-Moving Sandy Drainage
While specific drainage classes aren't listed, the high sand content suggests rapid water movement. Gardeners should monitor for quick drying during the warmer summer months common to the coast.
Lush Growth in Zone 6a
Positioned in Hardiness Zone 6a, this county enjoys one of Maine's longest growing seasons. Vibrant tomatoes and flowers thrive in this high-organic soil, provided you adjust the acidity for your specific plants.
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: Loam
Typical soil profile. Actual depths vary by location.
USDA Soil Orders
Acidic Soil Detected
Your county's average pH is 3.9. These products help balance soil pH for healthier grass.
Browse Soil AmendmentsFrequently Asked Questions
What type of soil does Cumberland County have?
Cumberland County's soil is classified as Loam. This indicates the relative proportions of sand, silt, and clay — 29% sand, 21% silt, and 6% clay. Loamy soils hold moisture well and support a wide range of plants.
Is Cumberland County's soil acidic or alkaline?
Cumberland County's soil has a low pH of 3.9, which is strongly acidic. Acidic soils benefit from lime applications to raise pH and improve nutrient availability.
What is the drainage class for Cumberland County?
Drainage class data is not currently available for Cumberland County.
What crops or plants grow well in Cumberland County's soil?
Based on Cumberland County's Loam texture, pH of 3.9, and drainage class, the soil is well suited for acid-loving plants like blueberries and azaleas, row crops and vegetable gardens.
What USDA soil order is found in Cumberland County?
The dominant USDA soil order for Cumberland County is not currently available in our dataset.
Soil & Planting Advisory: Cumberland County
Soil Verdict
Cumberland 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
Cumberland County is somewhat warmer than the Maine statewide average. The zone range of 5a-6a within the county means soil and planting decisions should account for local elevation and topography.
Planning your lawn? View lawn care data for Cumberland 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.