Washington DC · zones 7b–7b
When to plant green beans in Washington DC.
Sow between Apr 5 to May 26 in a typical year, keyed to Washington DC's median last frost around Apr 5. A second, fall sowing fits Jul 25 to Aug 27. Dates below are state medians; your ZIP code shifts them by days to weeks.
The 2026 windows
Green Beans dates for a typical Washington DC season.
Direct sow
Apr 5 to May 26
Keyed to the ~Apr 5 last frost. Sow 1" deep, 3" apart.
Fall round
Jul 25 to Aug 27
Counted back from the ~Nov 8 first frost.
Harvest
~55 days later
~0.75 lb per plant over ~3 weeks.
Washington DC 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.