Custer County, Idaho, ID, USA plant hardiness zones (gardening zones)

Plant hardiness zones (winter frost zones or gardening zones) range for Custer County, Idaho (ID), USA is:

• 3b
• 4a
• 5a
• 5b

by the USDA scale.

• coldest zone's winter temperature: −35 … -30 °F

• warmest zone's winter temperature: −15 … -10 °F

Cities of Custer County, Idaho (ID), USA

• ChallisUSDA hardiness zone: 5a
• ClaytonUSDA hardiness zone: 5a
• EllisUSDA hardiness zone: 5b
• Lost RiverUSDA hardiness zone: 4a
• MacKayUSDA hardiness zone: 5a
• StanleyUSDA hardiness zone: 3b