Planting windows for Alta 1 NNW
Computed from Alta 1 NNW'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 | Apr 19 – May 3 | Jun 21 – Jun 28 | — |
| 🫑 Peppers | Apr 5 – Apr 19 | Jun 28 – Jul 5 | — |
| 🥬 Lettuce | May 3 – May 17 | May 17 – May 31 | May 17 – Jun 14 |
| 🫛 Peas | — | — | May 3 – May 17 |
| 🥕 Carrots | — | — | May 24 – Jun 14 |
| 🥦 Broccoli | Apr 26 – May 10 | May 24 – Jun 7 | — |
| 🥬 Kale | May 3 – May 17 | May 17 – May 31 | May 17 – May 31 |
| 🥒 Cucumbers | May 17 – May 24 | Jun 21 – Jun 28 | Jun 21 – Jun 28 |
| 🥒 Zucchini | May 17 – May 24 | Jun 21 – Jun 28 | Jun 21 – Jun 28 |
| 🫘 Green Beans (Bush) | — | — | Jun 21 – Jun 28 |
| 🌽 Sweet Corn | — | — | Jun 21 – Jun 28 |
| 🌿 Basil | May 3 – May 17 | Jun 21 – Jun 28 | Jun 28 – Jul 5 |
| 🧄 Garlic | — | — | Fall: Jul 31 – Aug 28 |
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 Alta 1 NNW's dates automatically after a lookup.
Reading the season in Alta 1 NNW
At about 89 frost-free days, Alta 1 NNW rewards efficiency: start warm-season crops indoors, favor short-season varieties, and lean on cold-tolerant crops — peas, kale, roots — that shrug off the shoulder-season frosts on either end.