What plant hardiness zone is Block Island

Block Island is located at Washington County, Rhode Island (RI), USA.

Plant hardiness zone (winter frost zone or gardening zone) for Block Island is 7a by the USDA scale.

Coldest zone's winter temperature is 0 … +5 °F.

Plants of 7a USDA hardiness zone suitable for outdoor gardening and growing in this winter frost zone 7a USDA.

Block Island, Rhode Island @ wikipedia.