What plant hardiness zone is Oskaloosa

Oskaloosa is located at Mahaska County, Iowa (IA), USA.

Plant hardiness zone (winter frost zone or gardening zone) for Oskaloosa 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.