Broccoli planting windows by zone
| Zone | Main planting window | |
|---|---|---|
| Zone 1 | May 25 – Jun 8 | transplant outdoors |
| Zone 2 | May 9 – May 23 | transplant outdoors |
| Zone 3 | Apr 24 – May 8 | transplant outdoors |
| Zone 4 | Apr 14 – Apr 28 | transplant outdoors |
| Zone 5 | Apr 1 – Apr 15 | transplant outdoors |
| Zone 6 | Mar 20 – Apr 3 | transplant outdoors |
| Zone 7 | Mar 9 – Mar 23 | transplant outdoors |
| Zone 8 | Feb 22 – Mar 8 | transplant outdoors |
| Zone 9 | Jan 30 – Feb 13 | transplant outdoors |
| Zone 10 | Jan 4 – Jan 18 | transplant outdoors |
| Zone 11 | Coolest months (Oct–Mar) | frost-free |
| Zone 12 | Coolest months (Oct–Mar) | frost-free |
| Zone 13 | Coolest months (Oct–Mar) | frost-free |
Each zone link above has the complete schedule — indoor seed-starting, fall planting, and season-fit notes. Zone dates are typical medians; for windows built on your own city's frost dates, use the frost date lookup and planting calendar.