Delaware · zones 7b–7b
When to plant cucumbers in Delaware.
Sow between Apr 19 to Jul 19 in a typical year, keyed to Delaware's median last frost around Apr 12. A second, fall sowing fits Jul 1 to Aug 1. Dates below are state medians; your ZIP code shifts them by days to weeks.
The 2026 windows
Cucumbers dates for a typical Delaware season.
Direct sow
Apr 19 to Jul 19
Keyed to the ~Apr 12 last frost. Sow 1" deep, 12" apart.
Fall round
Jul 1 to Aug 1
Counted back from the ~Nov 1 first frost.
Harvest
~60 days later
~5 lb per plant over ~5 weeks.
Delaware spans more than one climate: Zone 7 is the most common zone, but the state runs 7b 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.