Connecticut: Plant Hardiness Zones, Climate & Soil Conditions

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The state of Connecticut is home to a diverse array of agriculture, with greenhouse and nursery products leading the way in terms of production.

Other important crops grown in the state include apples, hay, dairy products, shellfish, and tobacco.

In fact, Connecticut ranks 10th in the nation for maple syrup production.

Plant Hardiness Zones for Connecticut

Firstly, let us take a look at the US Plant Hardiness Zone Map of the state.

Plant Hardiness Zone Map For Connecticut


Connecticut’s climate ranges from humid continental type in the north to humid subtropical in the south.  

The average high temperatures in the state reach 85°F in summer, while heatwaves make temperatures above 100°F. 

Whereas winters are cold, with average low temperatures between 1-3°F at the peak of January.


The rainfall in Connecticut is even throughout the year and averages in the range of 44-48 inches annually.

Significant differences occur in precipitation between two topographically different places just a few miles away.

Snowfall averages from a yearly 20 inches in the south and east, to 60 inches in the northern hilly regions.

Soil type

Let us see the ecoregions of the state.

Ecoregions Map of Connecticut

Now, let us understand the soil orders distribution in these regions

Soil Order Of Connecticut

Soil / Sub OrderLocationCharacteristics
Entisols/Orthents, Arents, and PsammentsIn the northeastern coastal zone.1. Orthents are commonly found on recent erosional surfaces.
2. Arents do not have diagnostic horizons because they have been deeply mixed by plowing, spading, or other methods of moving by humans.
Psamments are sandy soils.
Inceptisols/UdeptsFound almost all over the state.1. Udepts are mainly freely drained Inceptisols that have a udic or perudic moisture regime.
Histosols/HemistsIt is found very little in the state.1. Hemists are the wet Histosols in which the organic materials are moderately decomposed.

Best Fruits / Veggies to Grow in the State

Looking for Plant Hardiness, Climate & Soil Conditions for other US States? Check out our guides for other states here>