Frost dates · USDA zone 10a
Frost dates for Largo, FL
Largo, FL sees its last 32 °F night of spring around January 17 and its first of fall around January 14 (next year) — a 365-day freeze-free season in a typical year.
Pick a sauce; the Plan Builder runs this station's dates and hands back the calendar, plant count and gear list.
Freeze odds, by date
| Odds | Last spring freeze after | First fall freeze before |
|---|---|---|
| 9 years in 10 | Jan 1 | Feb 4 (next year) |
| Median — 1 year in 2 | Jan 17 | Jan 14 (next year) |
| 1 year in 10 | Feb 6 | Dec 27 |
The top row is the risky edge: in 9 years of 10 a spring freeze still comes after it, so tender transplants set out then need cover. The bottom row is the cautious date — only 1 year in 10 freezes after it — and the one to plan uncovered tender transplants against. Freeze-free season: 365 days median, at least 345 in 9 years of 10, no freeze at all in 1 year of 10. NOAA ranks season length year by year, so it is not the gap between two rows above.
Largo planting calendar, 2027
Every row runs from the median last frost (Jan 17) and median first frost (Jan 14) above, using each cultivar's days to maturity. Same engine as the Plan Builder.
| Crop | Start indoors | Transplant / plant | First harvest | Days |
|---|---|---|---|---|
| Hardneck GarlicSiberian (porcelain hardneck) | — | Oct 15prior fall | Jun 12 | 240 from sow |
| Spanish OnionYellow Sweet Spanish (long-day) | Oct 25 | Dec 20 | Apr 9 | 110 from transplant |
| Mustard greensGarnet Giant (Brassica juncea) | Direct sow | Jan 17 | Feb 16 | 30 from sow |
| CilantroSlow Bolt (Coriandrum sativum) | Jan 3 | Jan 3 | Feb 17 | 45 from sow |
| Genovese BasilGenovese | Dec 20 | Jan 31 | Apr 1 | 60 from transplant |
| CayenneLong Slim Cayenne (Capsicum annuum) | Nov 22 | Jan 24 | Apr 9 | 75 from transplant |
| HabaneroOrange Habanero (Capsicum chinense) | Nov 8 | Jan 31 | May 6 | 95 from transplant |
| JalapeñoEarly Jalapeño (Capsicum annuum) | Nov 22 | Jan 24 | Apr 9 | 75 from transplant |
| Marconi Red PepperMarconi Red (Capsicum annuum) | Nov 22 | Jan 24 | Apr 14 | 80 from transplant |
| SerranoSerrano Tampiqueño (Capsicum annuum) | Nov 22 | Jan 24 | Apr 14 | 80 from transplant |
| Nantes CarrotScarlet Nantes | Jan 3 | Jan 3 | Mar 14 | 70 from sow |
| TomatilloToma Verde | Dec 6 | Jan 24 | Apr 4 | 70 from transplant |
| Roma TomatoRoma VF (determinate paste) | Dec 6 | Jan 24 | Apr 9 | 75 from transplant |
| San Marzano TomatoSan Marzano (indeterminate paste) | Dec 6 | Jan 24 | Apr 14 | 80 from transplant |
Tight means first harvest lands within two weeks of the median first fall frost: start that crop indoors on time or cover it in fall.
What sauce can Largo grow?
Each sauce, scheduled for a Largo container garden: when the first seeds go in and when enough fruit has ripened for one batch.
Largo frost questions
When is the last frost in Largo, FL?
The median last 32 °F freeze at ST PETERSBURG INTL AP, FL is January 17: half of years see a later one. One year in ten, a freeze still comes after February 6; nine years in ten, it comes after January 1. Source: NOAA NCEI 1991–2020 U.S. Climate Normals.
When is the first frost in Largo, FL?
The median first 32 °F freeze of fall is January 14 (next year). One year in ten it arrives before December 27; nine years in ten, before February 4 (next year).
How long is the growing season in Largo, FL?
NOAA counts a full 365-day freeze-free season at ST PETERSBURG INTL AP, FL in a typical year. What limits a sauce garden here is heat: peppers and tomatoes drop flowers in sustained hot nights, so plant to finish before peak summer or after it breaks.
What growing zone is Largo, FL?
USDA hardiness zone 10a, per the 2023 USDA Plant Hardiness Zone Map for ZIP 33771. A zone describes the coldest winter night, not when frost ends, so it is the wrong number for a planting calendar — the frost dates on this page are the right one.
When should I plant tomatoes in Largo, FL?
Start Roma VF (determinate paste) seeds indoors around Dec 6 and transplant around Jan 24, 1 week after the median last frost. To cut the freeze risk to one year in ten, wait for Feb 6. First ripe fruit lands around Apr 9.
When should I plant peppers in Largo, FL?
Sow jalapeño indoors on a heat mat around Nov 22; transplant no earlier than Jan 24, and wait past it until nights hold above 50 °F — that can run weeks later. First green pods around Apr 9.
Nearby in Florida
- Clearwaterlast frost Jan 17
- Pinellas Parklast frost Jan 17
- St. Petersburglast frost Jan 17
- Tampalast frost Jan 20
- Bradentonlast frost Jan 16
- Plant Citylast frost Jan 30
All Florida frost dates → · How frost-date math drives a sowing calendar →