Planting windows for Great Falls
Computed from Great Falls'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 11 – Mar 25 | May 13 – May 20 | — |
| 🫑 Peppers | Feb 25 – Mar 11 | May 20 – May 27 | — |
| 🥬 Lettuce | Mar 25 – Apr 8 | Apr 8 – Apr 22 | Apr 8 – May 6 |
| 🫛 Peas | — | — | Mar 25 – Apr 8 |
| 🥕 Carrots | — | — | Apr 15 – May 6 |
| 🥦 Broccoli | Mar 18 – Apr 1 | Apr 15 – Apr 29 | — |
| 🥬 Kale | Mar 25 – Apr 8 | Apr 8 – Apr 22 | Apr 8 – Apr 22 |
| 🥒 Cucumbers | Apr 8 – Apr 15 | May 13 – May 20 | May 13 – May 20 |
| 🥒 Zucchini | Apr 8 – Apr 15 | May 13 – May 20 | May 13 – May 20 |
| 🫘 Green Beans (Bush) | — | — | May 13 – May 20 |
| 🌽 Sweet Corn | — | — | May 13 – May 20 |
| 🌿 Basil | Mar 25 – Apr 8 | May 13 – May 20 | May 20 – May 27 |
| 🧄 Garlic | — | — | Fall: Aug 20 – Sep 17 |
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 Great Falls's dates automatically after a lookup.
Reading the season in Great Falls
At about 148 frost-free days, Great Falls 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.