Jacksonville, FL · zone 9a · ~310 frost-free days
When to plant a garden in Jacksonville.
In Jacksonville, the typical last spring frost lands around Feb 15 and the first fall frost around Dec 22, giving you about 310 frost-free days. Cool-season crops go out before the last frost; warm-season crops wait until after it.
The 2026 windows
Sow dates for Jacksonville, keyed to your frost.
| Crop | Start indoors | Spring sow / set out | Fall sow |
|---|---|---|---|
| Tomato, slicing | Jan 11 to Mar 13 | Feb 22 to Apr 24 | — |
| Lettuce, leaf | — | Jan 8 to Feb 22 | Oct 8 to Dec 7 |
| Carrot | — | Jan 8 to Feb 10 | Sep 26 to Oct 22 |
| Bush Bean | — | Feb 15 to Apr 7 | Sep 7 to Oct 10 |
| Cucumber, slicing | — | Feb 22 to May 24 | Aug 21 to Sep 21 |
| Pepper, bell | Jan 20 to Mar 13 | Mar 3 to Apr 24 | — |
| Kale | Nov 27 to Dec 25 | Jan 8 to Feb 5 | Sep 21 to Nov 6 |
| Spinach | — | Jan 1 to Feb 5 | Oct 8 to Nov 26 |
Jacksonville sits in Zone 9a, but two gardens in the same city can be a week or two apart. The planner works from your ZIP code's frost dates, not the zone, so the dates land right for your block, not the metro average.
Build your Jacksonville garden plan.
Tell the free planner what you want to eat and who you're feeding. It returns plant counts, spacing, and frost-safe sow dates for ZIP 32202 in about 60 seconds.