Missouri · zones 5b–7a
When to plant cucumbers in Missouri.
Sow between Apr 22 to Jul 22 in a typical year, keyed to Missouri's median last frost around Apr 15. A second, fall sowing fits Jun 19 to Jul 20. Dates below are state medians; your ZIP code shifts them by days to weeks.
The 2026 windows
Cucumbers dates for a typical Missouri season.
Direct sow
Apr 22 to Jul 22
Keyed to the ~Apr 15 last frost. Sow 1" deep, 12" apart.
Fall round
Jun 19 to Jul 20
Counted back from the ~Oct 20 first frost.
Harvest
~60 days later
~5 lb per plant over ~5 weeks.
Missouri 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.