St. Petersburg, FL Frost Dates
Average frost dates, USDA hardiness zone, and growing season length for St. Petersburg, Florida.
Gardening in St. Petersburg
The Sunshine City's garden culture thrives on the same waterfront-focused, arts-friendly energy that drives the city's renaissance. Container gardens on the downtown waterfront, community plots in residential neighborhoods.
Zone 9b with Tampa Bay and Gulf moderation. Your 312-day growing season is generous. Sandy pinellas soil drains fast. The peninsula's water-on-three-sides geography keeps temperatures moderate year-round.
The Saturday Morning Market downtown is one of the largest in the Southeast. St. Pete's vibrant arts district extends its creative energy to food growing — expect painted raised beds and Instagram-worthy container gardens.
What This Means for St. Petersburg Gardeners
The average last spring frost in St. Petersburg is around February 1, and the average first fall frost arrives around December 10. That gives you approximately 312 frost-free days to work with.
312 days is a long, productive season that supports two full rounds of warm-season crops plus continuous cool-season production through your mild winter. Most frost-sensitive crops can be transplanted by February 1, giving them months to produce before fall. Your winter garden is the real advantage — growing fresh vegetables in December and January while northern gardeners browse seed catalogs.
These dates are based on NOAA 30-year Climate Normal data for the St. Petersburg 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 St. Petersburg
With 312 frost-free days, St. Petersburg 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 St. Petersburg.
More About Zone 9B
St. Petersburg is in USDA Hardiness Zone 9B, which means average annual extreme minimum temperatures between 25°F to 30°F. View the full Zone 9B 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 St. Petersburg 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 St. Petersburg (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 10 through February 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.