When to plant Broccoli in Zone 6a
In Zone 6a, Broccoli: start seeds indoors around Mar 3–Mar 17; transplant outdoors around Apr 7–Apr 21; direct sow outdoors around Jul 11–Aug 1. Expect to harvest around Jun 11–Jun 25.
| Step | When |
|---|---|
| Start seeds indoors | Mar 3 – Mar 17 |
| Transplant outdoors | Apr 7 – Apr 21 |
| Direct sow outdoors | Jul 11 – Aug 1 |
| Harvest | Jun 11 – Jun 25 |
| Harvest | Sep 14 – Oct 5 |
Tip: A cool-season brassica. Transplant in early spring or late summer; it bolts in midsummer heat.
Zone 6a averages a last spring frost around Apr 21 and a first fall frost around Oct 17. These are zone averages — look up your ZIP for your exact area.
See the full Zone 6a calendar in the tool →