What plant hardiness zone is Sigourney

Sigourney is located at Keokuk County, Iowa (IA), USA.

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

Coldest zone's winter temperature is −15 … -10 °F.

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