South Boardman, MI frost dates
Last spring frostMay 24median date
First fall frostOct 4median date
Growing season133 daysfrost-free
Hardiness zone5bZone 5b
How South Boardman compares
- In 8 years out of 10, the last spring frost in South Boardman falls between May 3 and June 8, a 36-day window. The first fall frost falls between September 17 and October 19.
- The median last frost is 19 days later than the Michigan median of May 5.
- Its 133-day growing season is longer than 14% of the 878 Michigan places with a regular frost season (state median 162 days).
- The last frost is 23 days later than the zone 5b median of May 1. Hardiness zones measure winter cold, not season length, so use these dates rather than a zone 5b chart.
- The weather station records an average of 169 nights a year at or below 32°F.
Frost probability
| Chance of frost after | Date |
|---|---|
| 90% (early) | May 3 |
| 50% (median) | May 24 |
| 10% (safe for tender plants) | June 8 |
| Chance of frost before | Date |
|---|---|
| 10% (early) | September 17 |
| 50% (median) | October 4 |
| 90% (late) | October 19 |
Frost here means 32°F (0°C). A median date means half of years have their last frost earlier and half later.
Planting calendar for South Boardman, MI
South Boardman, MI frost dates — last frost May 24, first frost Oct 4, zone 5b. whenisthelastfrost.com
Crop
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Start indoors: Mar 1 to Mar 15Transplant outside: Apr 26 to May 10
Start indoors: Mar 15 to Mar 29Transplant outside: Jun 7 to Jun 21
Start indoors: Mar 15 to Mar 29Transplant outside: Jun 7 to Jun 21
Start indoors: Mar 29 to Apr 12Transplant outside: May 31 to Jun 14
Start indoors: Mar 29 to Apr 12Transplant outside: May 3 to May 17Sow outdoors: Apr 26 to May 31Plant for fall: Aug 9 to Sep 6
Start indoors: Mar 29 to Apr 12Transplant outside: Apr 26 to May 10Sow outdoors: Apr 26 to May 10Plant for fall: Jul 26 to Aug 16
Start indoors: Mar 29 to Apr 12Transplant outside: May 10 to May 24Plant for fall: Jun 28 to Jul 19
Start indoors: Mar 29 to Apr 12Transplant outside: May 3 to May 17Plant for fall: Jun 28 to Jul 19
Start indoors: Mar 29 to Apr 12Transplant outside: May 10 to May 24Plant for fall: Jun 28 to Jul 19
Start indoors: Apr 12 to Apr 26Transplant outside: Jun 14 to Jun 28Sow outdoors: Jun 14 to Jun 28
Start indoors: Apr 12 to Apr 26Transplant outside: May 31 to Jun 14
Sow outdoors: Apr 12 to May 3Plant for fall: Jul 12 to Aug 2
Sow outdoors: Apr 12 to May 3Plant for fall: Aug 9 to Aug 30
Sow outdoors: Apr 19 to May 31Plant for fall: Aug 23 to Sep 13
Start indoors: Apr 26 to May 3Transplant outside: Jun 7 to Jun 14Sow outdoors: May 31 to Jun 14Plant for fall: Jul 19 to Aug 2
Start indoors: Apr 26 to May 3Sow outdoors: May 31 to Jun 14Plant for fall: Jul 26 to Aug 9
Start indoors: Apr 26 to May 3Sow outdoors: May 31 to Jun 14
Start indoors: Apr 26 to May 3Transplant outside: Jun 7 to Jun 21
Sow outdoors: May 3 to May 31Plant for fall: Jul 12 to Jul 26
Sow outdoors: May 3 to May 31Plant for fall: Jul 26 to Aug 9
Sow outdoors: May 3 to May 24
Sow outdoors: May 10 to Jun 7Plant for fall: Jul 26 to Aug 9
Sow outdoors: May 10 to May 31Plant for fall: Aug 9 to Aug 30
Sow outdoors: May 31 to Jun 21Plant for fall: Jul 19 to Aug 2
Sow outdoors: May 31 to Jun 14
Transplant outside: Jun 7 to Jun 28
Plant for fall: Sep 20 to Oct 25
Start indoorsTransplant outsideSow outdoorsPlant for fallMedian frost dates
When to plant vegetables in South Boardman, MI
| Crop | Start indoors | Transplant | Sow outdoors | Fall crop |
|---|---|---|---|---|
| Onions | Mar 1 – Mar 15 | Apr 26 – May 10 | — | — |
| Peppers | Mar 15 – Mar 29 | Jun 7 – Jun 21 | — | — |
| Eggplant | Mar 15 – Mar 29 | Jun 7 – Jun 21 | — | — |
| Tomatoes | Mar 29 – Apr 12 | May 31 – Jun 14 | — | — |
| Lettuce | Mar 29 – Apr 12 | May 3 – May 17 | Apr 26 – May 31 | Aug 9 – Sep 6 |
| Kale | Mar 29 – Apr 12 | Apr 26 – May 10 | Apr 26 – May 10 | Jul 26 – Aug 16 |
| Broccoli | Mar 29 – Apr 12 | May 10 – May 24 | — | Jun 28 – Jul 19 |
| Cabbage | Mar 29 – Apr 12 | May 3 – May 17 | — | Jun 28 – Jul 19 |
| Cauliflower | Mar 29 – Apr 12 | May 10 – May 24 | — | Jun 28 – Jul 19 |
| Okra | Apr 12 – Apr 26 | Jun 14 – Jun 28 | Jun 14 – Jun 28 | — |
| Basil | Apr 12 – Apr 26 | May 31 – Jun 14 | — | — |
| Peas | — | — | Apr 12 – May 3 | Jul 12 – Aug 2 |
| Spinach | — | — | Apr 12 – May 3 | Aug 9 – Aug 30 |
| Radishes | — | — | Apr 19 – May 31 | Aug 23 – Sep 13 |
| Cucumbers | Apr 26 – May 3 | Jun 7 – Jun 14 | May 31 – Jun 14 | Jul 19 – Aug 2 |
| Zucchini & Summer Squash | Apr 26 – May 3 | — | May 31 – Jun 14 | Jul 26 – Aug 9 |
| Winter Squash & Pumpkins | Apr 26 – May 3 | — | May 31 – Jun 14 | — |
| Melons & Watermelon | Apr 26 – May 3 | Jun 7 – Jun 21 | — | — |
| Carrots | — | — | May 3 – May 31 | Jul 12 – Jul 26 |
| Beets | — | — | May 3 – May 31 | Jul 26 – Aug 9 |
| Potatoes | — | — | May 3 – May 24 | — |
| Swiss Chard | — | — | May 10 – Jun 7 | Jul 26 – Aug 9 |
| Cilantro | — | — | May 10 – May 31 | Aug 9 – Aug 30 |
| Green Beans | — | — | May 31 – Jun 21 | Jul 19 – Aug 2 |
| Sweet Corn | — | — | May 31 – Jun 14 | — |
| Sweet Potatoes | — | Jun 7 – Jun 28 | — | — |
| Garlic | — | — | — | Sep 20 – Oct 25 |
Dates come from the median frost dates and common extension-service timing. Adjust for your soil temperature, microclimate and the varieties you grow.
About these dates
Based on 1991–2020 NOAA climate normals for the S Boardman 2w, MI weather station, 6 km away (elevation 1,047 ft (319 m)).
Frost dates near South Boardman
- Fife Lake May 24 · Oct 1
- Kalkaska May 24 · Oct 1
- Mayfield May 12 · Oct 16
- Rapid City May 24 · Oct 1
- Kingsley May 24 · Oct 1
- Williamsburg May 12 · Oct 16
- Acme May 12 · Oct 16
- Alden May 24 · Oct 1
- Manton May 19 · Oct 1
- Elk Rapids May 13 · Oct 19
Frequently asked questions
When is the last frost in South Boardman, MI?
The median last spring frost in South Boardman, MI is May 24. There is still about a 10% chance of frost after June 8, so wait until then to plant frost-tender crops like tomatoes and peppers.
When is the first frost in South Boardman, MI?
The median first fall frost is October 4, with about a 10% chance of frost before September 17.
How long is the growing season in South Boardman, MI?
About 133 days between the median last spring frost and first fall frost.
What planting zone is South Boardman, MI?
South Boardman, MI is in USDA hardiness zone 5b.