When to plant in Largo, FL
USDA Zone 10aEverything below — frost dates, hardiness zone, and what to plant when in Largo, Florida — is derived from the closest NOAA station with complete climate normals.
A ~-3-day frost-free window makes Largo a short-season garden: choose early varieties and start long-season crops indoors well ahead of the last frost. In zone 10a, frost is a minor factor for Largo — most perennials thrive, and annual vegetables can go out early and stay late.
The average first fall frost in Largo is now 7 days later than in the 1981–2010 normals. See how frost dates are shifting nationwide →
Frost probability
ST PETERSBURG INTL AP · 1991–2020The date the last spring and first fall frost occur, by threshold and probability. A 90% date is later in spring — and earlier in fall — than a 10% date; the 50% · 32°F row is what most gardeners plan around. These are Largo’s own odds, recorded at ST PETERSBURG INTL AP.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | Feb 17 | Jan 23 | Jan 1 | Dec 22 | Jan 12 | Feb 6 |
| 32°F | Feb 6 | Jan 17 | Jan 1 | Dec 27 | Jan 14 | Feb 4 |
Download this table as CSV ↓ — every threshold and probability, plus this city’s planting-window dates.
What to plant now
TODAY · JULY 19Nothing new to sow or transplant outdoors in the next few weeks — a seasonal lull. Check the full-year calendar below for the next window.
Full-year planting calendar
Each bar is the exact window to take a planting action in Largo, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 24 km · complete 32°F normalsWhen stations disagree by more than a few days, that spread is real microclimate variation — elevation, water, urban heat. Judge which station best matches your own yard.
Largo planting FAQ
When is the last spring frost in Largo, FL?
Plan for the last spring frost in Largo around January 17 (the date it has a 50% chance of a 32°F freeze). Anything frost-sensitive should go out after it.
When is the first fall frost in Largo, FL?
In Largo, the first 32°F freeze of fall lands around January 14 on average. Time your last harvests and any season-extension cover before it.
What hardiness zone is Largo in?
Largo is in USDA hardiness zone 10a. In zone 10a, winters are mild — many tender perennials overwinter here.
How long is the growing season in Largo?
Largo has about -3 frost-free days — a short growing season — between the average last spring frost (January 17) and first fall frost (January 14).
When should I plant tomatoes in Largo?
For Largo, sow tomatoes indoors about November 22–December 6 and move the seedlings out around January 24, after the last spring frost.
Never miss a window in Largo
An email when it’s time to start seeds, transplant, and sow — timed to Largo’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Bardmoor · 6 km
- Seminole · 7 km
- Clearwater · 8 km
- Pinellas Park · 9 km
- West Lealman · 10 km
- Safety Harbor · 13 km
- Lealman · 13 km
- Dunedin · 15 km
Frost dates recorded at ST PETERSBURG INTL AP, 9 km from the city center · 1991–2020 NOAA climate normals · zone from the USDA/PRISM 2023 map. How we compute this.
BlissGarden. "When to Plant in Largo, FL — Frost Dates & Zone 10a." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USW00012873. Retrieved from https://blissgarden.com/florida/largo.