What plant hardiness zone is Shellsburg

Shellsburg is located at Benton County, Iowa (IA), USA.

Plant hardiness zone (winter frost zone or gardening zone) for Shellsburg is 5a by the USDA scale.

Coldest zone's winter temperature is −20 … -15 °F.

Plants of 5a USDA hardiness zone suitable for outdoor gardening and growing in this winter frost zone 5a USDA.