According to the 2023 USDA Hardiness Zone Map Miami-Dade County, Florida is in Zones 10b (35°F to 30°F) and 11a (40°F to 35°F). This is a change from the 2012 USDA Hardiness Zone Map which has Miami-Dade County in Zones 10a (30°F to 25°F), 10b (35°F to 30°F) and 11a (40°F to 35°F).