Planting calendar for North Dakota
Short answer
Most of North Dakota is in climate zone 7, with an average last spring frost around May 15 and first fall frost around Sep 25. Plant hardy crops before the last frost, tender crops after. Enter your ZIP for dates tuned to your exact area.
Last spring frost
May 15
First fall frost
Sep 25
Climate zone(s)
6, 7
| Crop | Start indoors | Plant outside | Harvest |
|---|---|---|---|
| Peas | — | Apr 10 | Jun 9 |
| Spinach | — | Apr 10 | May 25 |
| Radishes | — | Apr 17 | May 15 |
| Kale | Apr 10 | Apr 17 | Jun 11 |
| Onions | Mar 6 | Apr 17 | Jul 26 |
| Lettuce | Apr 17 | Apr 24 | Jun 13 |
| Carrots | — | Apr 24 | Jul 3 |
| Beets | — | Apr 24 | Jun 18 |
| Broccoli | Apr 3 | May 1 | Jul 5 |
| Cabbage | Apr 3 | May 1 | Jul 10 |
| Potatoes | — | May 1 | Jul 30 |
| Cilantro | — | May 1 | Jun 15 |
| Zucchini / squash | Apr 24 | May 22 | Jul 11 |
| Green beans | — | May 22 | Jul 16 |
| Sweet corn | — | May 22 | Aug 5 |
| Tomatoes | Apr 3 | May 29 | Aug 12 |
| Peppers | Mar 20 | May 29 | Aug 17 |
| Cucumbers | Apr 24 | May 29 | Jul 23 |
| Pumpkins | May 1 | May 29 | Sep 16 |
| Basil | Apr 3 | May 29 | Jul 28 |
Dates use zone 7 (most of North Dakota); colder areas run later. Enter your ZIP in the calculator for your exact zone.
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Frequently asked questions
When is the last frost in North Dakota?
Most of North Dakota (zone 7) averages its last spring frost around May 15 and first fall frost around Sep 25. Colder parts of the state run later in spring.
When should I plant tomatoes in North Dakota?
Set tomato transplants out around May 29 in most of North Dakota — a couple of weeks after the last frost. Start seeds indoors about Apr 3.
What is the growing season in North Dakota?
Roughly Sep 25 minus May 15 for zone 7. Cool-season crops extend it on both ends; enter your ZIP for your exact dates.