Polk County, Iowa, IA, USA plant hardiness zones (gardening zones)

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

• 5a
• 5b

by the USDA scale.

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

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

Cities of Polk County, Iowa (IA), USA

• AllemanUSDA hardiness zone: 5a
• AltoonaUSDA hardiness zone: 5a
• AnkenyUSDA hardiness zone: 5a
• BerwickUSDA hardiness zone: 5a
• BondurantUSDA hardiness zone: 5a
• CliveUSDA hardiness zone: 5a
• Des MoinesUSDA hardiness zone: 5b
• ElkhartUSDA hardiness zone: 5a
• GrimesUSDA hardiness zone: 5a
• JohnstonUSDA hardiness zone: 5a
• MitchellvilleUSDA hardiness zone: 5a
• Pleasant HillUSDA hardiness zone: 5b
• Polk CityUSDA hardiness zone: 5a
• RunnellsUSDA hardiness zone: 5b
• SaylorvilleUSDA hardiness zone: 5a
• UrbandaleUSDA hardiness zone: 5a
• West Des MoinesUSDA hardiness zone: 5a
• Windsor HeightsUSDA hardiness zone: 5b