When to plant cauliflower in Arizona
Arizona spans USDA zones 6a–10a, so the right time to plant cauliflower shifts by weeks across the state. The window to transplant seedlings outdoors runs from about December 21 in Bullhead City to May 21 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 25 – January 8 |
| Tucson | 9b | February 5 | December 9 | January 22 – February 5 |
| Mesa | 9b | February 1 | December 10 | January 18 – February 1 |
| Gilbert | 9b | February 1 | December 11 | January 18 – February 1 |
| Chandler | 9b | February 13 | December 5 | January 30 – February 13 |
| Glendale | 9b | January 20 | December 15 | January 6 – January 20 |
| Scottsdale | 10a | January 27 | December 21 | January 13 – January 27 |
| Peoria | 9b | February 5 | December 11 | January 22 – February 5 |
Cauliflower in Arizona: FAQ
When can I plant cauliflower in Arizona?
Across Arizona, the time to transplant cauliflower spans roughly December 21 in Bullhead City to May 21 in Flagstaff, each following that city's local frost dates.
Does the cauliflower planting date vary across Arizona?
Yes. Arizona publishes 68 cities with their own frost dates, so the right cauliflower 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 cauliflower take to grow in Arizona?
Cauliflower takes about 55–80 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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