Maryland: Plant Hardiness Zones, Climate & Soil Conditions

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Maryland is located in the Mid-Atlantic region of the United States.

The state’s agricultural industry benefits from this climate, as it allows for a long growing season for crops such as corn, soybeans, and wheat.

Maryland also has large tracts of forestland which provide timber for the lumber industry.

Fishing is also an important part of Maryland’s economy.

US Plant Hardiness Zone Map

Let us give a glance at the US Plant Hardiness Zone Map of the state.

Plant Hardiness Zone Map for Maryland


Maryland has a wide range of climatic conditions.

The eastern half has a humid subtropical climate due to its proximity to the ocean.

The western half has an oceanic climate that changes to humid continental from the Cumberland Valley onwards to the remaining western portion.

Summers are hot and humid, and winters are cold and snowy.

The state belongs to zone 5a-8b. Summer temperatures peaks above 100°F in July, while winter temperatures often register below 0°F.


Maryland’s average annual rainfall is an ample 44 inches and ranges from 37 inches in the Cumberland area to 48 inches in the Allegheny Plateau.

The precipitation distribution is even over the year with a peak during the summer.

Snowfall ranges from 5-15 inches on the eastern shore to 30-40 inches in the western highlands.

Soil Type

The below map shows the ecoregions of the state.

Now we’ll understand the soil orders present in the state using the table below.

Soil Order Of Maryland

Soil / Sub OrderLocationCharacteristics
Inceptisols/UdeptsIn the mountains and valley regions of the state.1. Udepts are mainly freely drained Inceptisols that have a udic or perudic moisture regime.
Alfisols/UdalfsIn the ridges and valleys and piedmont uplands1. Udalfs have a udic moisture regime.
Ultisols/Aquults and UdultsThey are found in the eastern and southern parts of the state.1. Aquults are the Ultisols in wet areas where groundwater is very close to the surface.
2. Udults are the more or less freely drained, relatively humus-poor Ultisols that have a udic moisture regime.
Histosols/HemistsIn the eastern Chesapeake upland1. Hemists are the wet Histosols in which the organic materials are moderately decomposed.
Entisols/Aquents and PsammentsIn the western Chesapeake upland1. Aquents are the wet Entisols.
2. Psamments are sandy soils.

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