Oklahoma · zones 6b–7b
When to plant cucumbers in Oklahoma.
Sow between Apr 6 to Jul 6 in a typical year, keyed to Oklahoma's median last frost around Mar 30. A second, fall sowing fits Jul 4 to Aug 4. Dates below are state medians; your ZIP code shifts them by days to weeks.
The 2026 windows
Cucumbers dates for a typical Oklahoma season.
Direct sow
Apr 6 to Jul 6
Keyed to the ~Mar 30 last frost. Sow 1" deep, 12" apart.
Fall round
Jul 4 to Aug 4
Counted back from the ~Nov 4 first frost.
Harvest
~60 days later
~5 lb per plant over ~5 weeks.
Oklahoma spans more than one climate: Zone 7 is the most common zone, but the state runs 6b to 7b. 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.