Polk County, Oregon, OR, USA plant hardiness zones (gardening zones)

Plant hardiness zones (winter frost zones or gardening zones) range for Polk County, Oregon (OR), USA is:

• 8b

by the USDA scale.

• coldest zone's winter temperature: +15 … +20 °F

Cities of Polk County, Oregon (OR), USA

• DallasUSDA hardiness zone: 8b
• EolaUSDA hardiness zone: 8b
• Falls CityUSDA hardiness zone: 8b
• Fort HillUSDA hardiness zone: 8b
• Grand RondeUSDA hardiness zone: 8b
• IndependenceUSDA hardiness zone: 8b
• MonmouthUSDA hardiness zone: 8b
• RickreallUSDA hardiness zone: 8b