What plant hardiness zone is Silver Springs

Silver Springs is located at Copper River, Alaska (AK), USA.

Plant hardiness zone (winter frost zone or gardening zone) for Silver Springs is 2a by the USDA scale.

Coldest zone's winter temperature is −50 … -45 °F.

Plants of 2a USDA hardiness zone suitable for outdoor gardening and growing in this winter frost zone 2a USDA.

Silver Springs, Alaska @ wikipedia.