Maine · zones 3b–6a
When to plant carrots in Maine.
Sow between Mar 31 to May 3 in a typical year, keyed to Maine's median last frost around May 8. A second, fall sowing fits Jul 12 to Aug 7. Dates below are state medians; your ZIP code shifts them by days to weeks.
The 2026 windows
Carrots dates for a typical Maine season.
Direct sow
Mar 31 to May 3
Keyed to the ~May 8 last frost. Sow 0.25" deep, 2" apart.
Fall round
Jul 12 to Aug 7
Counted back from the ~Oct 7 first frost.
Harvest
~68 days later
~0.2 lb per plant over ~2 weeks.
Maine spans more than one climate: Zone 5 is the most common zone, but the state runs 3b to 6a. 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.