Planting windows for Seward Airport
Computed from Seward Airport's own frost dates. Click any crop for the full zone-4 growing guide — varieties, spacing, fall plantings, and more.
| Crop | Start seeds indoors | Transplant | Direct sow |
|---|---|---|---|
| 🍅 Tomatoes | Mar 7 – Mar 21 | May 9 – May 16 | — |
| 🫑 Peppers | Feb 21 – Mar 7 | May 16 – May 23 | — |
| 🥬 Lettuce | Mar 21 – Apr 4 | Apr 4 – Apr 18 | Apr 4 – May 2 |
| 🫛 Peas | — | — | Mar 21 – Apr 4 |
| 🥕 Carrots | — | — | Apr 11 – May 2 |
| 🥦 Broccoli | Mar 14 – Mar 28 | Apr 11 – Apr 25 | — |
| 🥬 Kale | Mar 21 – Apr 4 | Apr 4 – Apr 18 | Apr 4 – Apr 18 |
| 🥒 Cucumbers | Apr 4 – Apr 11 | May 9 – May 16 | May 9 – May 16 |
| 🥒 Zucchini | Apr 4 – Apr 11 | May 9 – May 16 | May 9 – May 16 |
| 🫘 Green Beans (Bush) | — | — | May 9 – May 16 |
| 🌽 Sweet Corn | — | — | May 9 – May 16 |
| 🌿 Basil | Mar 21 – Apr 4 | May 9 – May 16 | May 16 – May 23 |
| 🧄 Garlic | — | — | Fall: Aug 26 – Sep 23 |
Want this for all 50 crops, or as a printable seed-shelf schedule? Use the planting calendar and the seed starting scheduler — both can use Seward Airport's dates automatically after a lookup.
Reading the season in Seward Airport
Roughly 158 frost-free days gives Seward Airport gardeners room for nearly every common vegetable. Warm-season crops go out after May 2; a fall garden sown in late summer matures comfortably before the Oct 7 frost.