Washington · zones 6b–9a
When to plant carrots in Washington.
Sow between Mar 7 to Apr 9 in a typical year, keyed to Washington's median last frost around Apr 14. A second, fall sowing fits Jul 23 to Aug 18. Dates below are state medians; your ZIP code shifts them by days to weeks.
The 2026 windows
Carrots dates for a typical Washington season.
Direct sow
Mar 7 to Apr 9
Keyed to the ~Apr 14 last frost. Sow 0.25" deep, 2" apart.
Fall round
Jul 23 to Aug 18
Counted back from the ~Oct 18 first frost.
Harvest
~68 days later
~0.2 lb per plant over ~2 weeks.
Washington spans more than one climate: Zone 8 is the most common zone, but the state runs 6b to 9a. 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.