Planting windows for Bern
Computed from Bern'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 22 – May 6 | Jun 24 – Jul 1 | — |
| 🫑 Peppers | Apr 8 – Apr 22 | Jul 1 – Jul 8 | — |
| 🥬 Lettuce | May 6 – May 20 | May 20 – Jun 3 | May 20 – Jun 17 |
| 🫛 Peas | — | — | May 6 – May 20 |
| 🥕 Carrots | — | — | May 27 – Jun 17 |
| 🥦 Broccoli | Apr 29 – May 13 | May 27 – Jun 10 | — |
| 🥬 Kale | May 6 – May 20 | May 20 – Jun 3 | May 20 – Jun 3 |
| 🥒 Cucumbers | May 20 – May 27 | Jun 24 – Jul 1 | Jun 24 – Jul 1 |
| 🥒 Zucchini | May 20 – May 27 | Jun 24 – Jul 1 | Jun 24 – Jul 1 |
| 🫘 Green Beans (Bush) | — | — | Jun 24 – Jul 1 |
| 🌽 Sweet Corn | — | — | Jun 24 – Jul 1 |
| 🌿 Basil | May 6 – May 20 | Jun 24 – Jul 1 | Jul 1 – Jul 8 |
| 🧄 Garlic | — | — | Fall: Jul 23 – Aug 20 |
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 Bern's dates automatically after a lookup.
Reading the season in Bern
At about 78 frost-free days, Bern 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.