When to plant spinach in Arizona
Arizona spans USDA zones 6a–10a, so the right time to plant spinach shifts by weeks across the state. The window to sow seed directly outdoors runs from about November 23 in Bullhead City to April 23 in Flagstaff — below are local dates for 68 cities, each computed from its own frost dates.
| City | Zone | Last frost | First frost | Direct sow |
|---|---|---|---|---|
| Phoenix | 9b | January 8 | December 25 | November 27 – December 25 |
| Tucson | 9b | February 5 | December 9 | December 25 – January 22 |
| Mesa | 9b | February 1 | December 10 | December 21 – January 18 |
| Gilbert | 9b | February 1 | December 11 | December 21 – January 18 |
| Chandler | 9b | February 13 | December 5 | January 2 – January 30 |
| Glendale | 9b | January 20 | December 15 | December 9 – January 6 |
| Scottsdale | 10a | January 27 | December 21 | December 16 – January 13 |
| Peoria | 9b | February 5 | December 11 | December 25 – January 22 |
Spinach in Arizona: FAQ
When can I plant spinach in Arizona?
Across Arizona, the time to direct-sow spinach spans roughly November 23 in Bullhead City to April 23 in Flagstaff, each following that city's local frost dates.
Does the spinach planting date vary across Arizona?
Yes. Arizona publishes 68 cities with their own frost dates, so the right spinach 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 spinach take to grow in Arizona?
Spinach takes about 40–50 days to reach harvest once planted — check that this fits inside your city's frost-free season on its place page.
Never miss a window in your area
An email when it’s time to start seeds, transplant, and sow — timed to your frost dates. Double opt-in, one-click unsubscribe, no spam.