This week
No city we track in zone 4a is in a planting window this week.
City by city
| City | Last / first frost | This week | Next window |
|---|---|---|---|
| Bismarck, ND | May 10 / Sep 30 | Nothing | Hardy crops from Mar 29 |
| Fargo, ND | May 5 / Oct 3 | Nothing | Hardy crops from Mar 24 |
| Grand Forks, ND | May 10 / Oct 1 | Nothing | Hardy crops from Mar 29 |
Your own garden can differ from the nearest city by a week or more. Enter your ZIP code in what to plant now, and read all about zone 4a.
Sources: NOAA NCEI U.S. Climate Normals 1991 to 2020 (median 32°F freeze dates at the weather station nearest each city); Purdue Extension, Indiana Vegetable Planting Calendar (HO-186-W, December 2020) (spring groups and fall planting 4 to 8 weeks before the first frost). Purdue wrote the rules for Indiana; because they count from your own frost dates they are a starting point anywhere with a frost season. Check each seed packet for days to maturity, and watch the forecast.