Arizona · zones 5b–10a
When to plant carrots in Arizona.
Sow between Jan 1 to Jan 31 in a typical year, keyed to Arizona's median last frost around Feb 5. A second, fall sowing fits Aug 20 to Sep 15. Dates below are state medians; your ZIP code shifts them by days to weeks.
The 2026 windows
Carrots dates for a typical Arizona season.
Direct sow
Jan 1 to Jan 31
Keyed to the ~Feb 5 last frost. Sow 0.25" deep, 2" apart.
Fall round
Aug 20 to Sep 15
Counted back from the ~Nov 15 first frost.
Harvest
~68 days later
~0.2 lb per plant over ~2 weeks.
Arizona spans more than one climate: Zone 9 is the most common zone, but the state runs 5b to 10a. 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.