Oregon · zones 6a–9a
When to plant broccoli in Oregon.
Sow or transplant between Feb 22 to Mar 22 in a typical year, keyed to Oregon's median last frost around Apr 15. A second, fall sowing fits Jul 11 to Aug 20. Dates below are state medians; your ZIP code shifts them by days to weeks.
The 2026 windows
Broccoli dates for a typical Oregon season.
1 · Start indoors
Jan 11 to Feb 8
About 6 weeks before set-out. Warm spot, real light.
2 · Set out
Feb 22 to Mar 22
Keyed to the ~Apr 15 last frost. Sow 0.5" deep, 18" apart.
Fall round
Jul 11 to Aug 20
Counted back from the ~Oct 25 first frost.
Harvest
~60 days later
~1.2 lb per plant over ~3 weeks.
Oregon spans more than one climate: Zone 8 is the most common zone, but the state runs 6a to 9a. That's why the planner works from your ZIP code's frost dates, not your zone — mountain and coastal gardens in the same state can be three weeks apart.