What plant hardiness zone is Fort Richardson

Fort Richardson is located at Anchorage, Alaska (AK), USA.

Plant hardiness zone (winter frost zone or gardening zone) for Fort Richardson is 4b by the USDA scale.

Coldest zone's winter temperature is −25 … -20 °F.

Plants of 4b USDA hardiness zone suitable for outdoor gardening and growing in this winter frost zone 4b USDA.

Fort Richardson, Alaska @ wikipedia.