Miami, FL Frost Dates
Average frost dates, USDA hardiness zone, and growing season length for Miami, Florida.
Gardening in Miami
Miami gardening plays by tropical rules that the rest of the country doesn't even know exist. Your tomato season is winter. Your mango tree produces more fruit than your extended family can eat. And the line between 'garden' and 'jungle' is about three weeks of neglect. This is not your grandmother's vegetable patch — unless your grandmother was from Cuba, in which case it's exactly her vegetable patch.
Frost is essentially a rumor in Miami — it happens once a decade and makes the news when it does. Your growing season is 358 days, which sounds amazing until you realize that summer's combination of 95°F heat, 90% humidity, and daily afternoon thunderstorms creates conditions that rot most temperate vegetables before they can produce. The secret is embracing the tropics: grow tropical fruits, Caribbean herbs, and heat-loving crops during summer, then plant 'normal' vegetables during your glorious winter.
Heat fans know about performing in conditions that would melt lesser teams — Miami gardeners live that reality every August. Little Havana's front-yard gardens grow culantro, recao, and Scotch bonnet peppers that connect families to their Caribbean roots. The mango obsession is real — Miami has more mango variety debates than political debates, and the annual Mango Festival is a city holiday in all but name.
What This Means for Miami Gardeners
The average last spring frost in Miami is around January 1, and the average first fall frost arrives around December 25. That gives you approximately 358 frost-free days to work with.
Miami's growing season is essentially year-round. Frost is a rare event, not a seasonal boundary. Traditional cool-season crops grow through your mild winter, while tropical and subtropical plants thrive permanently outdoors. Your challenge isn't length of season — it's managing summer heat and humidity. Plant warm-season vegetables from September through February and shift to heat-tolerant crops for the summer months.
These dates are based on NOAA 30-year Climate Normal data for the Miami area. Your actual frost dates could shift 2-3 weeks in either direction in any given year. Learn more about our data sources.
What to Grow in Miami
With 358 frost-free days, Miami can grow nearly anything — including tropical and subtropical plants that most of the country can only dream about. Your prime vegetable season runs from fall through spring; summer is for heat-lovers like okra, sweet potatoes, and peppers. Recommended starting points: cherry tomatoes, jalapeños, okra, sweet potatoes, basil, collard greens, tomatillos, and lemongrass.
See the full Florida planting guide for all 40 plants: Florida Planting Calendar. Or enter your zip code for exact planting dates personalized to Miami.
More About Zone 10B
Miami is in USDA Hardiness Zone 10B, which means average annual extreme minimum temperatures between 35°F to 40°F. View the full Zone 10B planting guide.
See the complete planting calendar for Florida: Florida Planting Calendar.
Other Cities in Florida
Frequently Asked Questions
These dates are based on NOAA's 30-year Climate Normal data for the Miami area. They represent historical averages, not predictions. In any given year, the actual last frost could be 2-3 weeks earlier or later. Microclimates within Miami (urban heat islands, hilltops, low-lying valleys) can also shift your local frost dates by a week or more.
You can plant cool-season crops (lettuce, kale, broccoli) from December 25 through January 1 — your cool season is your primary vegetable season. Warm-season crops like tomatoes and peppers go out in early spring. Tropical plants grow year-round. Enter your zip code for exact dates for every plant.