Kansas · zones 5b–7a
When to plant broccoli in Kansas.
Sow or transplant between Feb 21 to Mar 21 in a typical year, keyed to Kansas's median last frost around Apr 14. A second, fall sowing fits Jul 8 to Aug 17. Dates below are state medians; your ZIP code shifts them by days to weeks.
The 2026 windows
Broccoli dates for a typical Kansas season.
1 · Start indoors
Jan 10 to Feb 7
About 6 weeks before set-out. Warm spot, real light.
2 · Set out
Feb 21 to Mar 21
Keyed to the ~Apr 14 last frost. Sow 0.5" deep, 18" apart.
Fall round
Jul 8 to Aug 17
Counted back from the ~Oct 22 first frost.
Harvest
~60 days later
~1.2 lb per plant over ~3 weeks.
Kansas spans more than one climate: Zone 6 is the most common zone, but the state runs 5b to 7a. 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.