USDA zone 10b in Florida
USDA plant hardiness zone 10b covers 28 locations across Florida (average annual extreme minimum 35 to 40 °F): Belleair, FL, Bonita Springs, FL, Cape Coral, FL, Coral Springs, FL, Davie, FL, Everglades, FL, and 22 more. Average last spring frost across this group ranges January 20 and growing seasons run 354 days — even within one state, because hardiness sets winter survival, not planting dates. The table below gives every Florida location's own frost dates; the printable planting calendar uses Belleair, this group's median-season location.
- USDA zone
- 10b35 to 40 °F
- Last frost range
- Jan 20avg, 32°F
- First frost range
- Jan 9avg, 32°F
- Growing season range
- 354days
Locations in this group
Every location below shares this zone and a nearby weather station, but keeps its own frost dates — find your town for its own numbers, or use the ZIP planner on the home page for an instant personalized answer.
| Location | Also covers | Nearest station | Last frost | First frost | Season (days) |
|---|---|---|---|---|---|
| Belleair * | — | Tarpon Spgs Sewage Plt | Jan 20 | Jan 9 | 354 |
| Bonita Springs | Golden Gate, Pelican Bay, Pelican Marsh, Pine Ridge, Lely, Naples Park, +3 more | Naples | frost-free | frost-free | 365 |
| Cape Coral | Fort Myers, Bonita Springs, Sanibel, St. James, Iona, San Carlos Park, +6 more | Ft Myers Page Fld Ap | frost-free | frost-free | 365 |
| Coral Springs | Sunrise, Parkland, Tamarac, Margate, Lauderhill, North Lauderdale | Ft Lauderdale Executive Ap | frost-free | frost-free | 365 |
| Davie | Pembroke Pines, Weston, Plantation, Sunrise, Southwest Ranches, Lauderhill | Ft Lauderdale | frost-free | frost-free | 365 |
| Everglades | Chokoloskee | Everglades | frost-free | frost-free | 365 |
| Florida | Leisure | Homestead Gen Aviation Ap | frost-free | frost-free | 365 |
| Florida | — | Royal Palm Rs | frost-free | frost-free | 365 |
| Grove | — | Venice | frost-free | frost-free | 365 |
| Hobe Sound | — | Port Salerno 5w | frost-free | frost-free | 365 |
| Jupiter | Tequesta, Cabana Colony, Juno Ridge | Juno Beach | frost-free | frost-free | 365 |
| Kendale Lakes | The Hammocks, Tamiami, Three Lakes, Kendall West | Miami Kendall Tamiami Exec Ap | frost-free | frost-free | 365 |
| Longboat Key | Holmes Beach, West Bradenton, Anna Maria, Bradenton Beach | Sarasota Bradenton Ap | frost-free | frost-free | 365 |
| Marco Island | Goodland | Marco Is | frost-free | frost-free | 365 |
| Naples | — | Naples Muni Ap | frost-free | frost-free | 365 |
| Palm Beach Gardens | The Acreage, Jupiter Farms | Palm Beach Gardens | frost-free | frost-free | 365 |
| Pembroke Pines | Southwest Ranches | Miami Opa Locka Ap | frost-free | frost-free | 365 |
| Plantation Island | — | Oasis Rs | frost-free | frost-free | 365 |
| Pompano Beach | Parkland, Coconut Creek, Hillsboro Pines | Pompano Beach Airpark | frost-free | frost-free | 365 |
| Ridgecrest | Indian Rocks Beach, Belleair Beach | St Petersburg Intl Ap | frost-free | frost-free | 365 |
| Rotonda | — | Punta Gorda 4 Ese | frost-free | frost-free | 365 |
| South Miami Heights | Homestead Base, Naranja | Perrine 4w | frost-free | frost-free | 365 |
| St. Petersburg | Seminole, Lealman, West Lealman, Gulfport, Bay Pines, Tierra Verde, +4 more | St Petersburg | frost-free | frost-free | 365 |
| Stuart | Hobe Sound, Jensen Beach, Sewall's Point | Stuart | frost-free | frost-free | 365 |
| Tamiami | Sweetwater | Miami Intl Ap | frost-free | frost-free | 365 |
| Wellington | Boca Raton, Boynton Beach, Delray Beach, Greenacres, Golf, Watergate | Loxahatchee Nwr | frost-free | frost-free | 365 |
| West Palm Beach | Wellington, Royal Palm Beach, Riviera Beach, Lake Worth Beach, Palm Springs, Palm Beach, +5 more | West Palm Beach Intl Ap | frost-free | frost-free | 365 |
| Westlake | Pahokee | Canal Pt Usda | frost-free | frost-free | 365 |
* Belleair is this group's median-season location — the calendar below is computed from its data.
Data: NOAA NCEI U.S. Climate Normals 1991–2020 (public domain) and USDA Plant Hardiness Zone Map 2023. Planting windows synthesized from U.S. Cooperative Extension guides.
Planting calendar (Belleair, representative)
Computed from Belleair's average frost dates — the median-season location in this Floridazone 10b group. hatched = start seeds indoors, solid green = plant out, teal = a fall sowing, and the terracotta dot marks the estimated first harvest. Ranges are extension-guide planning guidance, not guarantees — your own location's dates may run a week or two earlier or later (see the table above).
- Start indoors
- Plant out
- Fall sowing
- First harvest
| Crop | Frost tolerance | Start indoors | Plant out | First harvest | Fall planting | Season fit |
|---|---|---|---|---|---|---|
| Tomato | Tender | Jan 1 | Jan 27 – Feb 3 | Mar 28 – Apr 17 | — | matures comfortably |
| Pepper | Very tender | Jan 1 | Feb 3 – Feb 10 | Apr 4 – May 4 | — | matures comfortably |
| Cucumber | Tender | Jan 1 | Jan 27 – Feb 3 | Mar 18 – Apr 7 | — | matures comfortably |
| Summer squash / zucchini | Tender | — | Jan 27 – Feb 3 | Mar 13 – Mar 28 | — | matures comfortably |
| Bush bean | Tender | — | Jan 27 – Feb 3 | Mar 18 – Mar 28 | — | matures comfortably |
| Sweet corn | Tender | — | Jan 20 – Feb 3 | Mar 21 – Apr 20 | — | matures comfortably |
| Basil | Very tender | Jan 1 | Jan 27 – Feb 3 | Feb 26 – Mar 13 | — | matures comfortably |
| Lettuce | Half-hardy | Jan 1 | Jan 1 – Jan 6 | Feb 15 – Mar 2 | — | matures comfortably |
| Pea | Hardy | — | Jan 1 | Feb 25 – Mar 12 | — | matures comfortably |
| Spinach | Hardy | — | Jan 1 | Feb 10 – Feb 20 | — | matures comfortably |
| Carrot | Half-hardy | — | Jan 1 – Jan 6 | Mar 2 – Mar 22 | — | matures comfortably |
| Broccoli | Half-hardy | Jan 1 | Jan 1 – Jan 6 | Feb 25 – Mar 17 | — | matures comfortably |
Which crops fit this growing season
Using Belleair's own 354-day growing season (32°F, NOAA 1991–2020 median) against each crop's real days-to-maturity range: 12 of 12 crops mature here with comfortable margin. A different location in the table above with a longer or shorter season will get a different mix — the ZIP planner on the home page gives your own.
Frost & freeze dates (Belleair)
From NOAA's 1991–2020 Climate Normals at station USC00088824. The median (p50) is the average date; the 90%-safe column is the date the freeze has passed in about 9 years out of 10 — the conservative date to plant after or harvest before.
| Threshold | Last spring — avg | Last spring — 90%-safe | First fall — avg | First fall — 90%-safe | Season (days) |
|---|---|---|---|---|---|
| 36°F | Jan 31 | Mar 1 | Dec 31 | Jan 27 | 326 |
| 32°F (freeze) | Jan 20 | Feb 14 | Jan 9 | Feb 4 | 354 |
| 28°F | Jan 15 | Feb 5 | Jan 13 | Feb 1 | 365 |
| 24°F | — | — | — | — | 365 |
Growing degree days
Growing degree days (GDD) accumulate warmth above a base temperature over the year — a better predictor of crop development than the calendar alone. This group's median GDD (base 50°F) across all 28 locations is 9,375; Belleair's own reading is shown below.
| Model | °F·days | Used for |
|---|---|---|
| Base 50°F (warm-season) | 8,406 | standard warm-season base (tomato, corn, beans) |
| Base 40°F (cool-season) | 12,023 | cool-season crops (brassicas, greens) |
Hardiness zone 10b in Florida
Zone 10b means an average annual extreme minimum winter temperature of about 35 to 40 °F on the USDA's 2023 map — the number that tells you which perennials, shrubs, and trees reliably survive an average winter here. It does not set your planting dates, which come from the frost calendar above. Florida spans 7 hardiness zones in this dataset — see all Florida locations for the full range, including zones8b, 9a, 9b, 10a, 11a, 11b.
Explore zone 10b in other states at zone 10b, or see all USDA hardiness zones.
Frequently asked questions
- What does USDA hardiness zone 10b mean in Florida?
- Zone 10b means an average annual extreme minimum winter temperature of 35 to 40 °F — the standard USDA measure of which perennials survive winter. 28 locations in Florida fall in this zone. It does not set planting dates; see the frost calendar below for that.
- When should I plant tomatoes in Florida's zone 10b?
- Using Belleair's frost dates (this page's median-season location): start seeds indoors about Jan 1, then transplant outside about Jan 27 – Feb 3. Your own location in the table above may differ by a week or two — use the ZIP planner on the home page for your exact station's dates.
- Does every location in Florida's zone 10b have the same frost dates?
- No — they do not all share a weather station, so frost dates vary by a week or more across the 28 locations listed (see the table above for each location's own dates).
Sources & method
Frost, freeze, growing-season, and growing-degree-day figures are NOAA NCEI U.S. Climate Normals 1991–2020, one reading per location's own nearest station (see the table above). The hardiness zone is the USDA Plant Hardiness Zone Map 2023, matched to each location's ZIP. Planting windows are computed by counting from the average last and first frost using per-crop offsets synthesized from U.S. Cooperative Extension guides — the full method and citations are on the methodology page.