Delaware · zones 7b–7b
When to plant lettuce in Delaware.
Sow between Mar 5 to Apr 19 in a typical year, keyed to Delaware's median last frost around Apr 12. A second, fall sowing fits Aug 18 to Oct 17. Dates below are state medians; your ZIP code shifts them by days to weeks.
The 2026 windows
Lettuce dates for a typical Delaware season.
Direct sow
Mar 5 to Apr 19
Keyed to the ~Apr 12 last frost. Sow 0.25" deep, 6" apart.
Fall round
Aug 18 to Oct 17
Counted back from the ~Nov 1 first frost.
Harvest
~45 days later
~0.4 lb per plant over ~1 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.