US Grow Zones

North Port, Florida: planting zone & frost dates

Last updated · Sources: PRISM/OSU 2023 ZIP zone listings; NOAA NCEI 1991–2020 Climate Normals (station USC00086065); U.S. Census Bureau — see methodology

North Port is in USDA plant hardiness zone 10a, where the average coldest winter night reaches 30 to 35°F (-1.1 to 1.7°C). The typical last spring frost is around Feb 11 and the first fall frost around Dec 28.

Hardiness zone10A30 to 35°F
Last spring frostFeb 1130% chance of frost after
First fall frostDec 2830% chance of frost before
Growing season336 daysmedian frost-free days

Frost dates

ProbabilityLast spring frost (32°F)First fall frost (32°F)
Safer (10% risk)Mar 3Dec 5
Typical planning date (30% risk)Feb 11Dec 28
Median (50%)Feb 1Jan 6

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 MYAKKA RVR SP, FL (USC00086065), 14.5 mi (23.3 km) from the city center and 3 ft higher than the city center (+1 m). Record used for the 1991–2020 normals: 28 years.

Frost probability in spring and fall, North Port, FLChance of a 32°F frost in North Port, FL, NOAA 1991–2020. Spring: the chance of another frost falls from 90% on Jan 1 to 10% on Mar 3. Fall: the chance that the first frost has arrived rises from 10% on Dec 5 to 90% on Feb 5.0%50%100%Spring: later frostJan 1Feb 1Mar 130%: Feb 11Fall: frost arrivedDec 1Jan 1Feb 130%: Dec 2832°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 USC00086065.
Frost-free growing season in North Port, FL1 in 10 risk: Mar 3 to Dec 5 (277 days); 3 in 10 risk: Feb 11 to Dec 28 (320 days); Median (50%): Feb 1 to Jan 6 (339 days); No 28°F freeze: Jan 15 to Jan 9 (359 days). In 9 of 10 years the 32°F-free season is at least 301 days.Frost-free days, spring to fallJFMAMJJASOND1 in 10 risk277 days3 in 10 risk320 daysMedian (50%)339 daysNo 28°F freeze359 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 North Port

All 7 ZIP codes covering North Port are in zone 10a.

ZIP codes in North Port and their zones
ZIPZoneShare of city land
3428610a27.6%
3428810a19.4%
3422310a16.3%
3428710a12.1%
3429310a10.6%
3429110a9.7%
3428910a3.6%

Vegetable planting calendar for North Port

Dates are counted from the 30%-risk frost dates above (last frost Feb 11, first frost Dec 28). Shift a week later in cold spots or low-lying ground.

CropStart indoorsTransplant / plant outDirect sowFall crop sow/plant
TomatoDec 17 – Dec 31Feb 18 – Mar 4——
PepperDec 3 – Dec 17Feb 25 – Mar 11——
Lettuce
Mild winters: fall and winter plantings are usually more reliable than spring.
Dec 31 – Jan 14Jan 28 – Feb 18Jan 14 – Feb 25Oct 19 – Nov 16
Green Beans——Feb 18 – Mar 25Oct 5 – Oct 19
Sweet Corn——Feb 18 – Mar 18—
Zucchini & Summer SquashJan 14 – Jan 21Feb 18 – Mar 4Feb 18 – Mar 11Oct 5 – Oct 19
CucumberJan 14 – Jan 21Feb 25 – Mar 4Feb 18 – Mar 11Oct 5 – Oct 19
Carrot
Mild winters: fall and winter plantings are usually more reliable than spring.
——Jan 21 – Feb 25Oct 5 – Oct 19
Onion
Mild winters: fall and winter plantings are usually more reliable than spring.
Nov 19 – Dec 3Jan 14 – Jan 28——
Potato
Mild winters: fall and winter plantings are usually more reliable than spring.
—Jan 14 – Feb 4——
BasilDec 31 – Jan 14Feb 25 – Mar 11Feb 25 – Mar 18—
Spinach
Mild winters: fall and winter plantings are usually more reliable than spring.
——Dec 31 – Jan 28Nov 2 – Nov 30
Kale
Mild winters: fall and winter plantings are usually more reliable than spring.
Dec 17 – Dec 31Jan 14 – Feb 4Jan 14 – Feb 4Oct 19 – Nov 16
Broccoli
Mild winters: fall and winter plantings are usually more reliable than spring.
Dec 17 – Dec 31Jan 28 – Feb 18—Oct 5 – Oct 19
Peas
Mild winters: fall and winter plantings are usually more reliable than spring.
——Dec 31 – Jan 21Oct 19 – Nov 2
EggplantDec 3 – Dec 17Feb 25 – Mar 11——
Cabbage
Mild winters: fall and winter plantings are usually more reliable than spring.
Dec 17 – Dec 31Jan 14 – Jan 28—Oct 5 – Oct 19
Radish
Mild winters: fall and winter plantings are usually more reliable than spring.
——Jan 7 – Feb 25Nov 16 – Dec 14
Strawberry—Jan 14 – Feb 4——
Beets
Mild winters: fall and winter plantings are usually more reliable than spring.
——Jan 21 – Mar 4Oct 19 – Nov 2

Nearby cities in Florida

More: all Florida cities · other zone 10a cities: Los Angeles, CA, Oakland, CA, Tampa, FL, Orlando, FL, Riverside, CA, Corpus Christi, TX, Port St. Lucie, FL, Scottsdale, AZ

North Port gardening questions

When is the last frost in North Port, FL?

Plan around Feb 11. At NOAA's Myakka Rvr Sp, FL station, 14.5 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 Feb 1, and after Mar 3 the risk drops to about 1 in 10. A hard freeze (28°F) usually ends earlier, around Jan 15. Springs here are erratic: 61 days separate the 90% and 10% dates, versus a median of 36 days for cities on this site, so watch the forecast rather than the calendar.

When should I plant tomatoes in North Port, FL?

Start seeds indoors Dec 17 – Dec 31 and set transplants outside Feb 18 – Mar 4, once nights stay above 50°F and the soil is near 60°F. With about 320 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 North Port?

About 336 days without a 32°F frost in a typical (median) year. In 9 years out of 10 the season lasts at least 301 days, and in 1 year in 10 it runs 365 days or more. In fall there is a 10% chance of frost by Dec 5 and a 30% chance by Dec 28. That ranks 17th longest of 20 Florida cities on this site.

When should I plant a fall garden in North Port?

Count back from the first fall frost (Dec 28): transplant broccoli Oct 5 – Oct 19; sow kale Oct 19 – Nov 16; sow lettuce Oct 19 – Nov 16; sow radishes Nov 16 – Dec 14. Hardy crops keep growing through light frosts; the median 28°F hard freeze here is Jan 9. How the math works: succession and fall planting.

Did North Port's hardiness zone change on the 2023 map?

Yes. Most of North Port was zone 9b on the 2012 map and is zone 10a 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.

How does North Port compare with Cape Coral, FL?

North Port is zone 10a and Cape Coral is zone 10b. The typical last spring frost in North Port (Feb 11) comes about 14 days later than in Cape Coral, FL (Jan 28), 31 miles away, and the first fall frost is Dec 28 versus Jan 7. The two cities use different NOAA stations.