Oregon 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.

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Oregon Hardiness Zones Map - 2023

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List of Hardiness Zones for Locations in Oregon

Location2023 Hardiness Zone2012 Hardiness Zone1990 Hardiness Zone
Albany8b - 15°F to 20°F 8b - 15°F to 20°F8a - 10°F to 15°F
Aloha8b - 15°F to 20°F 8b - 15°F to 20°F8a - 10°F to 15°F
Altamont6b - -5°F to 0°F 6b - -5°F to 0°F6b - -5°F to 0°F
Ashland8a - 10°F to 15°F 8a - 10°F to 15°F7b - 5°F to 10°F
Beaverton9a - 20°F to 25°F 8b - 15°F to 20°F8a - 10°F to 15°F
Bend6b - -5°F to 0°F 6b - -5°F to 0°F6a - -10°F to -5°F
Brookings10a - 30°F to 35°F 9b - 25°F to 30°F9b - 25°F to 30°F
Canby9a - 20°F to 25°F 8b - 15°F to 20°F8a - 10°F to 15°F
Cedar Mill8b - 15°F to 20°F 8b - 15°F to 20°F8a - 10°F to 15°F
Central Point8b - 15°F to 20°F 8b - 15°F to 20°F8b - 15°F to 20°F
Coos Bay9b - 25°F to 30°F 9a - 20°F to 25°F9a - 20°F to 25°F
Corvallis8b - 15°F to 20°F 8b - 15°F to 20°F8a - 10°F to 15°F
Dallas8b - 15°F to 20°F 8b - 15°F to 20°F8a - 10°F to 15°F
Eugene8b - 15°F to 20°F 8b - 15°F to 20°F8a - 10°F to 15°F
Forest Grove8b - 15°F to 20°F 8b - 15°F to 20°F8b - 15°F to 20°F
Four Corners8b - 15°F to 20°F 8b - 15°F to 20°F8a - 10°F to 15°F
Grants Pass8b - 15°F to 20°F 8b - 15°F to 20°F8b - 15°F to 20°F
Gresham9a - 20°F to 25°F 8b - 15°F to 20°F8b - 15°F to 20°F
Happy Valley8b - 15°F to 20°F 8b - 15°F to 20°F8b - 15°F to 20°F
Hayesville8b - 15°F to 20°F 8b - 15°F to 20°F8a - 10°F to 15°F
Hermiston7b - 5°F to 10°F 7a - 0°F to 5°F6b - -5°F to 0°F
Hillsboro8b - 15°F to 20°F 8b - 15°F to 20°F8b - 15°F to 20°F
Keizer8b - 15°F to 20°F 8b - 15°F to 20°F8a - 10°F to 15°F
Klamath Falls6b - -5°F to 0°F 6b - -5°F to 0°F6b - -5°F to 0°F
Lake Oswego9a - 20°F to 25°F 8b - 15°F to 20°F8b - 15°F to 20°F
Lebanon8b - 15°F to 20°F 8b - 15°F to 20°F8a - 10°F to 15°F
McMinnville9a - 20°F to 25°F 8b - 15°F to 20°F8a - 10°F to 15°F
Medford8b - 15°F to 20°F 8b - 15°F to 20°F8a - 10°F to 15°F
Milwaukie9a - 20°F to 25°F 8b - 15°F to 20°F8b - 15°F to 20°F
Newberg8b - 15°F to 20°F 8b - 15°F to 20°F8b - 15°F to 20°F
Oak Grove9a - 20°F to 25°F 8b - 15°F to 20°F8b - 15°F to 20°F
Oregon City9a - 20°F to 25°F 8b - 15°F to 20°F8b - 15°F to 20°F
Pendleton7a - 0°F to 5°F 7a - 0°F to 5°F6a - -10°F to -5°F
Portland9a - 20°F to 25°F 9a - 20°F to 25°F8b - 15°F to 20°F
Redmond6b - -5°F to 0°F 6b - -5°F to 0°F6a - -10°F to -5°F
Roseburg9a - 20°F to 25°F 8b - 15°F to 20°F8b - 15°F to 20°F
Salem8b - 15°F to 20°F 8b - 15°F to 20°F8a - 10°F to 15°F
Sherwood8b - 15°F to 20°F 8b - 15°F to 20°F8b - 15°F to 20°F
Springfield8b - 15°F to 20°F 8b - 15°F to 20°F8a - 10°F to 15°F
The Dalles8a - 10°F to 15°F 8a - 10°F to 15°F6b - -5°F to 0°F
Tigard9a - 20°F to 25°F 8b - 15°F to 20°F8a - 10°F to 15°F
Troutdale9a - 20°F to 25°F 8b - 15°F to 20°F8b - 15°F to 20°F
Tualatin9a - 20°F to 25°F 8b - 15°F to 20°F8b - 15°F to 20°F
West Linn9a - 20°F to 25°F 8b - 15°F to 20°F8b - 15°F to 20°F
White City8b - 15°F to 20°F 8b - 15°F to 20°F8a - 10°F to 15°F
Wilsonville9a - 20°F to 25°F 8b - 15°F to 20°F8b - 15°F to 20°F
Woodburn8b - 15°F to 20°F 8b - 15°F to 20°F8a - 10°F to 15°F