Routt County, Colorado, CO, USA plant hardiness zones (gardening zones)

Plant hardiness zones (winter frost zones or gardening zones) range for Routt County, Colorado (CO), USA is:

• 4a
• 4b
• 5a

by the USDA scale.

• coldest zone's winter temperature: −30 … -25 °F

• warmest zone's winter temperature: −20 … -15 °F

Cities of Routt County, Colorado (CO), USA

• ClarkUSDA hardiness zone: 5a
• HaydenUSDA hardiness zone: 4b
• Oak CreekUSDA hardiness zone: 4b
• PhippsburgUSDA hardiness zone: 4b
• Steamboat Ski And Resort AreaUSDA hardiness zone: 4a
• Steamboat SpringsUSDA hardiness zone: 4a
• ToponasUSDA hardiness zone: 4b
• YampaUSDA hardiness zone: 4b