Alexander County, Illinois, IL, USA plant hardiness zones (gardening zones)

Plant hardiness zones (winter frost zones or gardening zones) range for Alexander County, Illinois (IL), USA is:

• 6b
• 7a

by the USDA scale.

• coldest zone's winter temperature: −5 … 0 °F

• warmest zone's winter temperature: 0 … +5 °F

Cities of Alexander County, Illinois (IL), USA

• CacheUSDA hardiness zone: 7a
• CairoUSDA hardiness zone: 7a
• East Cape GirardeauUSDA hardiness zone: 6b
• McClureUSDA hardiness zone: 6b
• Miller CityUSDA hardiness zone: 6b
• Olive BranchUSDA hardiness zone: 6b
• TammsUSDA hardiness zone: 6b
• ThebesUSDA hardiness zone: 6b
• UnityUSDA hardiness zone: 6b