Maryland · zones 6b–7b
When to plant zucchini in Maryland.
Sow between Apr 15 to Jul 29 in a typical year, keyed to Maryland's median last frost around Apr 8. A second, fall sowing fits Jul 21 to Aug 9. Dates below are state medians; your ZIP code shifts them by days to weeks.
The 2026 windows
Zucchini dates for a typical Maryland season.
Direct sow
Apr 15 to Jul 29
Keyed to the ~Apr 8 last frost. Sow 1" deep, 24" apart.
Fall round
Jul 21 to Aug 9
Counted back from the ~Nov 4 first frost.
Harvest
~50 days later
~8 lb per plant over ~5 weeks.
Maryland 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.