Fargo, ND · zone 4a · ~143 frost-free days
When to plant a garden in Fargo.
In Fargo, the typical last spring frost lands around May 10 and the first fall frost around Sep 30, giving you about 143 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 Fargo, keyed to your frost.
| Crop | Start indoors | Spring sow / set out | Fall sow |
|---|---|---|---|
| Tomato, slicing | Apr 5 to Jun 5 | May 17 to Jul 17 | — |
| Lettuce, leaf | — | Apr 2 to May 17 | Jul 17 to Sep 15 |
| Carrot | — | Apr 2 to May 5 | Jul 5 to Jul 31 |
| Bush Bean | — | May 10 to Jun 30 | Jun 16 to Jul 19 |
| Cucumber, slicing | — | May 17 to Aug 16 | May 30 to Jun 30 |
| Pepper, bell | Apr 14 to Jun 5 | May 26 to Jul 17 | — |
| Kale | Feb 19 to Mar 19 | Apr 2 to Apr 30 | Jun 30 to Aug 15 |
| Spinach | — | Mar 19 to Apr 30 | Jul 17 to Sep 4 |
Fargo sits in Zone 4a, 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 Fargo 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 58102 in about 60 seconds.