When to plant gai lan (chinese broccoli) in Wisconsin
Wisconsin spans USDA zones 4b–6a, so the right time to plant gai lan (chinese broccoli) shifts by weeks across the state. The window to sow seed directly 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 | Direct sow |
|---|---|---|---|---|
| Milwaukee | 6a | April 26 | October 18 | April 5 – May 10 |
| Madison | 5a | May 1 | October 9 | April 10 – May 15 |
| Green Bay | 5b | May 7 | October 9 | April 16 – May 21 |
| Kenosha | 5b | April 28 | October 19 | April 7 – May 12 |
| Racine | 6a | April 20 | October 24 | March 30 – May 4 |
| Appleton | 5b | May 4 | October 6 | April 13 – May 18 |
| Waukesha | 5b | May 1 | October 13 | April 10 – May 15 |
| Eau Claire | 4b | April 24 | October 14 | April 3 – May 8 |
Gai Lan (Chinese Broccoli) in Wisconsin: FAQ
When can I plant gai lan (chinese broccoli) in Wisconsin?
Across Wisconsin, the time to direct-sow gai lan (chinese broccoli) spans roughly March 29 in Pleasant Prairie to April 20 in River Falls, each following that city's local frost dates.
Does the gai lan (chinese broccoli) planting date vary across Wisconsin?
Yes. Wisconsin publishes 97 cities with their own frost dates, so the right gai lan (chinese broccoli) 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 gai lan (chinese broccoli) take to grow in Wisconsin?
Gai Lan (Chinese Broccoli) takes about 50–70 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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