Merrimack County Soil Data
Merrimack County, New Hampshire
USDA SSURGO / PHZMAvg pH
N/A
Texture
Unknown
Drainage
N/A
Organic Matter
N/A
Hydrologic Group
N/A
Data Story
About Soil in Merrimack County, New Hampshire
The Core of the Merrimack Valley
Specific soil pH and taxonomic data for Merrimack County are not present in current records. As part of the Granite State, the soil is generally expected to be more acidic than the national median of 6.5. This acidity is a defining trait of the region's historic agricultural lands.
Diverse Textures Along the River
Sand, silt, and clay percentages are not specifically documented for this area. The Merrimack River influences much of the local soil, often leaving behind productive silty deposits in the lowlands. These areas typically offer better workability than the rockier uplands.
Waiting for Fertile Data
Organic matter and water capacity metrics are missing for Merrimack County in this survey. Without these figures, it is hard to compare local fertility to the state's high average of 32.6% organic matter. Most successful growers in this area rely on regular composting to maintain peak productivity.
Monitoring Moisture in the Valley
Drainage classifications for the county remain unmapped in the current digital database. Proximity to the river system makes drainage a critical factor for both agriculture and development. Always check local water tables before planning any deep-rooted crops or basement construction.
Cultivating Crops in Zone 5b
The 5b hardiness zone offers a versatile environment for a wide range of New England staples. It is an ideal zone for berries, hardy herbs, and a variety of cool-season vegetables. With the right care, your garden can become a cornerstone of the local food landscape.
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
Soil Amendment Products
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Browse Soil AmendmentsFrequently Asked Questions
What type of soil does Merrimack County have?
Merrimack 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 Merrimack County's soil acidic or alkaline?
pH data is not available for Merrimack County.
What is the drainage class for Merrimack County?
Drainage class data is not currently available for Merrimack County.
What crops or plants grow well in Merrimack County's soil?
Based on Merrimack 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 Merrimack County?
The dominant USDA soil order for Merrimack County is not currently available in our dataset.
Soil & Planting Advisory: Merrimack County
Soil Verdict
Merrimack County is in USDA hardiness zone 5b, a cold climate zone. where winter lows can reach -15°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
Merrimack County closely matches the New Hampshire average hardiness conditions. 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 Merrimack County on LawnByCounty.com →
Other Counties in New Hampshire
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.