When to plant lettuce in Arizona
Arizona spans USDA zones 6a–10a, so the right time to plant lettuce shifts by weeks across the state. The window to transplant seedlings outdoors runs from about December 14 in Bullhead City to May 14 in Flagstaff — below are local dates for 68 cities, each computed from its own frost dates.
| City | Zone | Last frost | First frost | Transplant out |
|---|---|---|---|---|
| Phoenix | 9b | January 8 | December 25 | December 18 – January 8 |
| Tucson | 9b | February 5 | December 9 | January 15 – February 5 |
| Mesa | 9b | February 1 | December 10 | January 11 – February 1 |
| Gilbert | 9b | February 1 | December 11 | January 11 – February 1 |
| Chandler | 9b | February 13 | December 5 | January 23 – February 13 |
| Glendale | 9b | January 20 | December 15 | December 30 – January 20 |
| Scottsdale | 10a | January 27 | December 21 | January 6 – January 27 |
| Peoria | 9b | February 5 | December 11 | January 15 – February 5 |
Lettuce in Arizona: FAQ
When can I plant lettuce in Arizona?
Across Arizona, the time to transplant lettuce spans roughly December 14 in Bullhead City to May 14 in Flagstaff, each following that city's local frost dates.
Does the lettuce planting date vary across Arizona?
Yes. Arizona publishes 68 cities with their own frost dates, so the right lettuce planting window shifts by weeks between the warmest and coldest parts of the state — use your city's page for the exact dates.
How long does lettuce take to grow in Arizona?
Lettuce takes about 45–60 days to reach harvest once planted — check that this fits inside your city's frost-free season on its place page.
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