Key Biscayne, FL planting zone & frost dates
Key Biscayne is in USDA hardiness zone 11a. Frost is rare here: in most years temperatures do not drop to 32°F.
USDA hardiness zone11aavg. extreme winter low 40°F to 45°F
FrostRarein most years the nearest weather station records no 32°F freeze
Useful for zone 11a gardens
- Drip irrigation kit — saves water in long, hot seasons
- Shade cloth — protects plants from midday sun
- Soil moisture meter
- Plants for zone 11
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Hardiness zone by ZIP code in Key Biscayne
- 33149 zone 11a
Nearby cities
- Miami zone 11a
- Coconut Grove zone 11a
- Little Havana zone 11a
- Miami Beach zone 11a
- Coral Gables zone 11a
- South Miami zone 11a
- Allapattah zone 11a
- Pinecrest zone 11a
Questions
What growing zone is Key Biscayne, FL?
Key Biscayne is in USDA Plant Hardiness Zone 11a (average extreme winter low 40°F to 45°F), according to the USDA 2023 map.
Frost dates: NOAA U.S. Climate Normals 1991–2020, station Cape Florida, FL (USC00081306), 2.5 km (1.6 mi) from the city center, elevation 2 m, based on 20 years of records. Hardiness zone: USDA Plant Hardiness Zone Map 2023 for the ZIP code nearest to the city center. Microclimates (valleys, hills, cities, coasts) can be warmer or colder: check the local forecast before planting. How we calculate the data.