New Hampshire: Plant Hardiness Zones, Climate & Soil Conditions

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New Hampshire is a state located in the New England region of the northeastern United States.

The state is bordered by Massachusetts to the south, Vermont to the west, Maine and the Atlantic Ocean to the east, and the Canadian province of Quebec to the north.

New Hampshire is the 5th smallest state in the US, with a total area of 9,349 square miles. The state has a population of 1,342,795 as of 2019.

Agriculture has been an important part of New Hampshire’s economy since the state was first settled in the 1600s. Today, agriculture continues to play a significant role in the state’s economy, with dairy farming being one of the most important agricultural sectors.

Other important agricultural products include poultry, eggs, beef, hay, corn, and potatoes.

Plant Hardiness Zone Map

Let us start by observing the US Plant Hardiness Zone Map of the state.

Plant Hardiness Zone Map for New Hampshire


New Hampshire has a humid continental climate with warm, humid summers and cold, snowy winters.

In summer at the peak of July, the average daytime highs are in the 70-85°F range. Winters have average lows in the range of -4˚F to 15°F in January.

While in the northern wilderness, the temperature regularly drops below 0°F during the winter.


New Hampshire receives an average annual rainfall of 40 inches, with significant variations in the White Mountains range and northern highlands.

Rain is evenly distributed throughout the year. Snowfall is heavy during the winter and gets 60-100 inches statewide, with a higher range in the mountains.

Soil Type

The ecoregions of the state are shown on the map.

Now let us elaborate upon this map.

Soil Order Of New Hampshire

Soil / Sub OrderLocationCharacteristics
Entisols/Orthents, Psamments and Arents(small part)In the southern part of the upland region1. Orthents are commonly found on recent erosional surfaces.
2. Psamments are sandy soils.
3. Arents do not have diagnostic horizons because they have been deeply mixed by plowing, spading, or other methods of moving by humans.
Inceptisols/UdeptsIn the lower New England region and upland region.1. Udepts are mainly freely drained Inceptisols that have a udic or perudic moisture regime.
Histosols/Hemists In a small patch of the southern part1. Hemists are the wet Histosols in which the organic materials are moderately decompose.
Spodosols/OrthodsIn the White mountains and uplands region.1. Orthods are the relatively freely drained Spodosols with a moderate organic carbon accumulation in the spodic horizon.

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