When to plant bok choy in Wisconsin
Wisconsin spans USDA zones 4b–6a, so the right time to plant bok choy shifts by weeks across the state. The window to transplant seedlings outdoors runs from about March 29 in Pleasant Prairie to April 20 in River Falls — below are local dates for 97 cities, each computed from its own frost dates.
| City | Zone | Last frost | First frost | Transplant out |
|---|---|---|---|---|
| Milwaukee | 6a | April 26 | October 18 | April 5 – April 26 |
| Madison | 5a | May 1 | October 9 | April 10 – May 1 |
| Green Bay | 5b | May 7 | October 9 | April 16 – May 7 |
| Kenosha | 5b | April 28 | October 19 | April 7 – April 28 |
| Racine | 6a | April 20 | October 24 | March 30 – April 20 |
| Appleton | 5b | May 4 | October 6 | April 13 – May 4 |
| Waukesha | 5b | May 1 | October 13 | April 10 – May 1 |
| Eau Claire | 4b | April 24 | October 14 | April 3 – April 24 |
Bok Choy in Wisconsin: FAQ
When can I plant bok choy in Wisconsin?
Across Wisconsin, the time to transplant bok choy spans roughly March 29 in Pleasant Prairie to April 20 in River Falls, each following that city's local frost dates.
Does the bok choy planting date vary across Wisconsin?
Yes. Wisconsin publishes 97 cities with their own frost dates, so the right bok choy planting window shifts by weeks between the warmest and coldest parts of the state — use your city's page for the exact dates.
How long does bok choy take to grow in Wisconsin?
Bok Choy takes about 45–60 days to reach harvest once planted — check that this fits inside your city's frost-free season on its place page.
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