Springfield, MO · zone 6b · ~199 frost-free days
When to plant a garden in Springfield.
In Springfield, the typical last spring frost lands around Apr 10 and the first fall frost around Oct 26, giving you about 199 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 Springfield, keyed to your frost.
| Crop | Start indoors | Spring sow / set out | Fall sow |
|---|---|---|---|
| Tomato, slicing | Mar 6 to May 6 | Apr 17 to Jun 17 | — |
| Lettuce, leaf | — | Mar 3 to Apr 17 | Aug 12 to Oct 11 |
| Carrot | — | Mar 3 to Apr 5 | Jul 31 to Aug 26 |
| Bush Bean | — | Apr 10 to May 31 | Jul 12 to Aug 14 |
| Cucumber, slicing | — | Apr 17 to Jul 17 | Jun 25 to Jul 26 |
| Pepper, bell | Mar 15 to May 6 | Apr 26 to Jun 17 | — |
| Kale | Jan 20 to Feb 17 | Mar 3 to Mar 31 | Jul 26 to Sep 10 |
| Spinach | — | Feb 17 to Mar 31 | Aug 12 to Sep 30 |
Springfield sits in Zone 6b, 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 Springfield 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 65806 in about 60 seconds.