What plant hardiness zone is Big Pine Key

Big Pine Key is located at Monroe County, Florida (FL), USA.

Plant hardiness zone (winter frost zone or gardening zone) for Big Pine Key is 11b by the USDA scale.

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

Plants of 11b USDA hardiness zone suitable for outdoor gardening and growing in this winter frost zone 11b USDA.

Big Pine Key, Florida @ wikipedia.