US Grow Zones

Fort Myers, Florida: planting zone & frost dates

Last updated · Sources: PRISM/OSU 2023 ZIP zone listings; NOAA NCEI 1991–2020 Climate Normals (station USW00012835); U.S. Census Bureau — see methodology

Fort Myers is in USDA plant hardiness zone 10b, where the average coldest winter night reaches 35 to 40°F (1.7 to 4.4°C). The typical last spring frost is around Jan 28 and the first fall frost around Jan 7.

Hardiness zone10B35 to 40°F
Last spring frostJan 2830% chance of frost after
First fall frostJan 730% chance of frost before
Growing season365 daysmedian frost-free days

Frost dates

ProbabilityLast spring frost (32°F)First fall frost (32°F)
Safer (10% risk)Feb 2Dec 31
Typical planning date (30% risk)Jan 28Jan 7
Median (50%)Jan 16Jan 13

How to read this: after the spring "10% risk" date, a 32°F frost happens in only about 1 year in 10. In fall, the "10% risk" date is the early end — a frost before it happens about 1 year in 10.

Frost data comes from NOAA station FT MYERS PAGE FLD AP, FL (USW00012835), 3.0 mi (4.9 km) from the city center and 3 ft lower than the city center (-1 m). Record used for the 1991–2020 normals: 28 years.

Frost probability in spring and fall, Fort Myers, FLChance of a 32°F frost in Fort Myers, FL, NOAA 1991–2020. Spring: the chance of another frost falls from 90% on Jan 1 to 10% on Feb 2. Fall: the chance that the first frost has arrived rises from 10% on Dec 31 to 90% on Feb 2.0%50%100%Spring: later frostJan 1Jan 15Feb 130%: Jan 28Fall: frost arrivedJan 1Jan 15Feb 130%: Jan 732°F frost28°F hard freezeplanning date
Shaded areas show the chance of a 32°F frost: falling through spring, rising through fall. The dashed line is the 28°F hard-freeze curve. Data: NOAA 1991–2020 Normals, station USW00012835.
Frost-free growing season in Fort Myers, FL1 in 10 risk: Feb 2 to Dec 31 (332 days); 3 in 10 risk: Jan 28 to Jan 7 (344 days); Median (50%): Jan 16 to Jan 13 (362 days). In 9 of 10 years the 32°F-free season is at least 353 days.Frost-free days, spring to fallJFMAMJJASONDJ1 in 10 risk332 days3 in 10 risk344 daysMedian (50%)362 days
Frost-free window at three risk levels, plus the window between 28°F hard freezes. Read about what the probabilities mean.

Why your yard may differ from the station: microclimates.

Hardiness zone across Fort Myers

Fort Myers spans more than one half-zone. Share of the city's land area by zone (via its 8 ZIP codes): 10b (58%), 10a (42%). The headline zone is the one covering the most land. Look up your ZIP for your exact zone.

ZIP codes in Fort Myers and their zones
ZIPZoneShare of city land
3391610b25.8%
3391310a20.6%
3390510a18.5%
3390110b15.2%
3396610b9.4%
3391210b4.2%
3390710b3.2%
3397110a2.2%

Vegetable planting calendar for Fort Myers

Dates are counted from the 30%-risk frost dates above (last frost Jan 28, first frost Jan 7). Shift a week later in cold spots or low-lying ground.

CropStart indoorsTransplant / plant outDirect sowFall crop sow/plant
TomatoDec 3 – Dec 17Feb 4 – Feb 18——
PepperNov 19 – Dec 3Feb 11 – Feb 25——
Lettuce
Mild winters: fall and winter plantings are usually more reliable than spring.
Dec 17 – Dec 31Jan 14 – Feb 4Dec 31 – Feb 11Oct 29 – Nov 26
Green Beans——Feb 4 – Mar 11Oct 15 – Oct 29
Sweet Corn——Feb 4 – Mar 4—
Zucchini & Summer SquashDec 31 – Jan 7Feb 4 – Feb 18Feb 4 – Feb 25Oct 15 – Oct 29
CucumberDec 31 – Jan 7Feb 11 – Feb 18Feb 4 – Feb 25Oct 15 – Oct 29
Carrot
Mild winters: fall and winter plantings are usually more reliable than spring.
——Jan 7 – Feb 11Oct 15 – Oct 29
Onion
Mild winters: fall and winter plantings are usually more reliable than spring.
Nov 5 – Nov 19Dec 31 – Jan 14——
Potato
Mild winters: fall and winter plantings are usually more reliable than spring.
—Dec 31 – Jan 21——
BasilDec 17 – Dec 31Feb 11 – Feb 25Feb 11 – Mar 4—
Spinach
Mild winters: fall and winter plantings are usually more reliable than spring.
——Dec 17 – Jan 14Nov 12 – Dec 10
Kale
Mild winters: fall and winter plantings are usually more reliable than spring.
Dec 3 – Dec 17Dec 31 – Jan 21Dec 31 – Jan 21Oct 29 – Nov 26
Broccoli
Mild winters: fall and winter plantings are usually more reliable than spring.
Dec 3 – Dec 17Jan 14 – Feb 4—Oct 15 – Oct 29
Peas
Mild winters: fall and winter plantings are usually more reliable than spring.
——Dec 17 – Jan 7Oct 29 – Nov 12
EggplantNov 19 – Dec 3Feb 11 – Feb 25——
Cabbage
Mild winters: fall and winter plantings are usually more reliable than spring.
Dec 3 – Dec 17Dec 31 – Jan 14—Oct 15 – Oct 29
Radish
Mild winters: fall and winter plantings are usually more reliable than spring.
——Dec 24 – Feb 11Nov 26 – Dec 24
Strawberry—Dec 31 – Jan 21——
Beets
Mild winters: fall and winter plantings are usually more reliable than spring.
——Jan 7 – Feb 18Oct 29 – Nov 12

Nearby cities in Florida

More: all Florida cities · other zone 10b cities: San Diego, CA, San Francisco, CA, Long Beach, CA, Anaheim, CA, Irvine, CA, Santa Ana, CA, Chula Vista, CA, St. Petersburg, FL

Fort Myers gardening questions

When is the last frost in Fort Myers, FL?

Plan around Jan 28. At NOAA's Ft Myers Page Field Airport, FL station, 3.0 mi from the city center, there is a 30% chance of a 32°F frost after that date. Half of springs have their last frost by Jan 16, and after Feb 2 the risk drops to about 1 in 10. The 90% and 10% dates are 32 days apart, close to the 36-day median for cities on this site.

When should I plant tomatoes in Fort Myers, FL?

Start seeds indoors Dec 3 – Dec 17 and set transplants outside Feb 4 – Feb 18, once nights stay above 50°F and the soil is near 60°F. With about 344 frost-free days, frost is not the main limit — fruit set drops when nights stay above about 75°F, so early plantings tend to do best. More: tomato planting dates by zone.

How long is the growing season in Fort Myers?

About 365 days without a 32°F frost in a typical (median) year. In 9 years out of 10 the season lasts at least 353 days, and in 1 year in 10 it runs 365 days or more. In fall there is a 10% chance of frost by Dec 31 and a 30% chance by Jan 7. That ranks 7th longest of 20 Florida cities on this site.

When should I plant a fall garden in Fort Myers?

Count back from the first fall frost (Jan 7): transplant broccoli Oct 15 – Oct 29; sow kale Oct 29 – Nov 26; sow lettuce Oct 29 – Nov 26; sow radishes Nov 26 – Dec 24. How the math works: succession and fall planting.

Did Fort Myers's hardiness zone change on the 2023 map?

Yes. Most of Fort Myers was zone 10a on the 2012 map and is zone 10b on the 2023 map — half a zone warmer, like about 56% of U.S. ZIP codes. The shift comes from a newer 1991–2020 averaging period plus more weather stations and better mapping; it does not mean last frost comes earlier. Why the 2023 map is warmer.

Is all of Fort Myers in zone 10b?

No. Zone 10b covers about 58% of the city's land; the rest is in 10a (42%), measured across the city's 8 ZIP codes. Check your own ZIP code in the table above or with the ZIP lookup.