Maryland Plant Hardiness Zones

Hardiness Zones, also referred to as Growing Zones or Planting zones are defined by the U.S. Department of Agriculture (USDA) Agricultural Research Service (ARS). The zones in this map were created in 2023 using mean extreme climate data covering the period of 1991 to 2020. The previous version of this map released in 2012 was created using climate data from the period of 1976-2005. The data in the 2012 maps covered a cooler period than the 2023 maps.

Map Cities Related

Maryland Hardiness Zones Map - 2023

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List of Hardiness Zones for Locations in Maryland

Location2023 Hardiness Zone2012 Hardiness Zone1990 Hardiness Zone
Aberdeen7b - 5°F to 10°F 7a - 0°F to 5°F7a - 0°F to 5°F
Adelphi7b - 5°F to 10°F 7a - 0°F to 5°F6b - -5°F to 0°F
Annapolis8a - 10°F to 15°F 7b - 5°F to 10°F7a - 0°F to 5°F
Arbutus7b - 5°F to 10°F 7b - 5°F to 10°F7a - 0°F to 5°F
Arnold8a - 10°F to 15°F 7b - 5°F to 10°F7a - 0°F to 5°F
Aspen Hill7b - 5°F to 10°F 7a - 0°F to 5°F6b - -5°F to 0°F
Ballenger Creek7b - 5°F to 10°F 7a - 0°F to 5°F6b - -5°F to 0°F
Baltimore8a - 10°F to 15°F 7b - 5°F to 10°F7a - 0°F to 5°F
Beltsville7b - 5°F to 10°F 7a - 0°F to 5°F6b - -5°F to 0°F
Bethesda7b - 5°F to 10°F 7a - 0°F to 5°F6b - -5°F to 0°F
Bowie7b - 5°F to 10°F 7a - 0°F to 5°F7a - 0°F to 5°F
Brooklyn Park8a - 10°F to 15°F 7b - 5°F to 10°F7a - 0°F to 5°F
Calverton7b - 5°F to 10°F 7a - 0°F to 5°F6b - -5°F to 0°F
Camp Springs7b - 5°F to 10°F 7a - 0°F to 5°F6b - -5°F to 0°F
Carney7b - 5°F to 10°F 7b - 5°F to 10°F7a - 0°F to 5°F
Catonsville7b - 5°F to 10°F 7a - 0°F to 5°F7a - 0°F to 5°F
Chillum7b - 5°F to 10°F 7a - 0°F to 5°F6b - -5°F to 0°F
Clinton7b - 5°F to 10°F 7a - 0°F to 5°F7a - 0°F to 5°F
Cloverly7b - 5°F to 10°F 7a - 0°F to 5°F6b - -5°F to 0°F
Cockeysville7b - 5°F to 10°F 7a - 0°F to 5°F6b - -5°F to 0°F
Colesville7b - 5°F to 10°F 7a - 0°F to 5°F6b - -5°F to 0°F
College Park7b - 5°F to 10°F 7a - 0°F to 5°F6b - -5°F to 0°F
Crofton7b - 5°F to 10°F 7a - 0°F to 5°F7a - 0°F to 5°F
Cumberland7a - 0°F to 5°F 7a - 0°F to 5°F6b - -5°F to 0°F
Damascus7b - 5°F to 10°F 7a - 0°F to 5°F6b - -5°F to 0°F
Dundalk8a - 10°F to 15°F 7b - 5°F to 10°F7a - 0°F to 5°F
Easton7b - 5°F to 10°F 7b - 5°F to 10°F7a - 0°F to 5°F
Edgewood8a - 10°F to 15°F 7b - 5°F to 10°F7a - 0°F to 5°F
Eldersburg7a - 0°F to 5°F 7a - 0°F to 5°F6b - -5°F to 0°F
Elkridge7b - 5°F to 10°F 7b - 5°F to 10°F7a - 0°F to 5°F
Elkton7b - 5°F to 10°F 7a - 0°F to 5°F6b - -5°F to 0°F
Ellicott City7b - 5°F to 10°F 7a - 0°F to 5°F7a - 0°F to 5°F
Essex8a - 10°F to 15°F 7b - 5°F to 10°F7a - 0°F to 5°F
Fairland7b - 5°F to 10°F 7a - 0°F to 5°F6b - -5°F to 0°F
Ferndale7b - 5°F to 10°F 7b - 5°F to 10°F7a - 0°F to 5°F
Fort Washington7b - 5°F to 10°F 7a - 0°F to 5°F7a - 0°F to 5°F
Frederick7b - 5°F to 10°F 7a - 0°F to 5°F6b - -5°F to 0°F
Gaithersburg7b - 5°F to 10°F 7a - 0°F to 5°F6b - -5°F to 0°F
Germantown7b - 5°F to 10°F 7a - 0°F to 5°F6b - -5°F to 0°F
Glassmanor8a - 10°F to 15°F 7b - 5°F to 10°F7a - 0°F to 5°F
Glen Burnie7b - 5°F to 10°F 7b - 5°F to 10°F7a - 0°F to 5°F
Glenmont7b - 5°F to 10°F 7a - 0°F to 5°F6b - -5°F to 0°F
Greenbelt7b - 5°F to 10°F 7a - 0°F to 5°F6b - -5°F to 0°F
Hagerstown7a - 0°F to 5°F 6b - -5°F to 0°F6b - -5°F to 0°F
Hillcrest Heights7b - 5°F to 10°F 7a - 0°F to 5°F6b - -5°F to 0°F
Hyattsville7b - 5°F to 10°F 7a - 0°F to 5°F6b - -5°F to 0°F
Joppatowne7b - 5°F to 10°F 7a - 0°F to 5°F7a - 0°F to 5°F
Lake Shore8a - 10°F to 15°F 7b - 5°F to 10°F7a - 0°F to 5°F
Landover7b - 5°F to 10°F 7a - 0°F to 5°F6b - -5°F to 0°F
Langley Park7b - 5°F to 10°F 7a - 0°F to 5°F6b - -5°F to 0°F
Laurel7b - 5°F to 10°F 7a - 0°F to 5°F7a - 0°F to 5°F
Lexington Park8a - 10°F to 15°F 7b - 5°F to 10°F7a - 0°F to 5°F
Linganore7a - 0°F to 5°F 6b - -5°F to 0°F6a - -10°F to -5°F
Lochearn7b - 5°F to 10°F 7a - 0°F to 5°F7a - 0°F to 5°F
Maryland City7b - 5°F to 10°F 7a - 0°F to 5°F7a - 0°F to 5°F
Middle River8a - 10°F to 15°F 7b - 5°F to 10°F7a - 0°F to 5°F
Milford Mill7b - 5°F to 10°F 7a - 0°F to 5°F7a - 0°F to 5°F
Montgomery Village7b - 5°F to 10°F 7a - 0°F to 5°F6b - -5°F to 0°F
North Bethesda7b - 5°F to 10°F 7a - 0°F to 5°F6b - -5°F to 0°F
North Laurel7b - 5°F to 10°F 7a - 0°F to 5°F6b - -5°F to 0°F
Odenton7b - 5°F to 10°F 7a - 0°F to 5°F7a - 0°F to 5°F
Olney7b - 5°F to 10°F 7a - 0°F to 5°F6b - -5°F to 0°F
Owings Mills7b - 5°F to 10°F 7a - 0°F to 5°F7a - 0°F to 5°F
Oxon Hill7b - 5°F to 10°F 7a - 0°F to 5°F7a - 0°F to 5°F
Parkville7b - 5°F to 10°F 7b - 5°F to 10°F7a - 0°F to 5°F
Perry Hall7b - 5°F to 10°F 7a - 0°F to 5°F7a - 0°F to 5°F
Pikesville7b - 5°F to 10°F 7a - 0°F to 5°F7a - 0°F to 5°F
Potomac7b - 5°F to 10°F 7a - 0°F to 5°F6b - -5°F to 0°F
Randallstown7a - 0°F to 5°F 6b - -5°F to 0°F7a - 0°F to 5°F
Redland7b - 5°F to 10°F 7a - 0°F to 5°F6b - -5°F to 0°F
Reisterstown7a - 0°F to 5°F 7a - 0°F to 5°F7a - 0°F to 5°F
Rockville7b - 5°F to 10°F 7a - 0°F to 5°F6b - -5°F to 0°F
Rosedale8a - 10°F to 15°F 7b - 5°F to 10°F7a - 0°F to 5°F
Salisbury7b - 5°F to 10°F 7b - 5°F to 10°F7a - 0°F to 5°F
Severn7b - 5°F to 10°F 7a - 0°F to 5°F7a - 0°F to 5°F
Severna Park8a - 10°F to 15°F 7b - 5°F to 10°F7a - 0°F to 5°F
Silver Spring7b - 5°F to 10°F 7a - 0°F to 5°F6b - -5°F to 0°F
South Laurel7b - 5°F to 10°F 7a - 0°F to 5°F7a - 0°F to 5°F
Suitland7b - 5°F to 10°F 7a - 0°F to 5°F6b - -5°F to 0°F
Takoma Park7b - 5°F to 10°F 7a - 0°F to 5°F6b - -5°F to 0°F
Towson7b - 5°F to 10°F 7a - 0°F to 5°F7a - 0°F to 5°F
Waldorf7b - 5°F to 10°F 7a - 0°F to 5°F7a - 0°F to 5°F
Westminster7a - 0°F to 5°F 6b - -5°F to 0°F7a - 0°F to 5°F
Wheaton7b - 5°F to 10°F 7a - 0°F to 5°F6b - -5°F to 0°F
White Oak7b - 5°F to 10°F 7a - 0°F to 5°F6b - -5°F to 0°F