When to plant in Arizona
Most of Arizona sees its last spring frost between Jan 14 and May 16, and its first fall frost between Oct 10 and Dec 22. The middle of the state is around March 13 and November 20: that's what the dates below use.
Hardiness zones in Arizona: 6b (6%), 7a (9%), 7b (3%), 8a (6%), 8b (12%), 9a (10%), 9b (38%), 10a (15%).
Planting dates for common crops
| Crop | Start indoors | Plant outside | Harvest | Plant for fall |
|---|---|---|---|---|
| Tomato | Feb 18 | Apr 8 – Apr 22 | Jun 17 – Sep 9 | — |
| Pepper | Feb 4 | Apr 8 – Apr 22 | Jun 22 – Sep 14 | — |
| Cucumber | — | Apr 8 – Apr 22 | Jun 2 – Jul 21 | — |
| Zucchini / Summer squash | — | Apr 8 – Apr 22 | May 28 – Aug 6 | — |
| Winter squash | — | Apr 8 – Apr 22 | Jul 12 – Aug 16 | — |
| Green beans (bush) | — | Apr 8 – Apr 22 | Jun 2 – Jul 14 | — |
| Peas | — | Jan 30 – Feb 13 | Mar 31 – May 5 | Aug 31 – Sep 14 |
| Sweet corn | — | Apr 8 – Apr 22 | Jun 22 – Jul 20 | — |
| Lettuce | — | Feb 13 – Feb 27 | Mar 30 – May 11 | Sep 22 – Oct 6 |
| Spinach | — | Jan 30 – Feb 13 | Mar 11 – Apr 22 | Oct 11 – Oct 25 |
| Kale | Jan 2 | Feb 13 – Feb 27 | Apr 9 – Jul 2 | Oct 10 – Oct 24 |
| Broccoli | Jan 9 | Feb 20 – Mar 6 | Apr 21 – May 26 | Sep 14 – Sep 28 |
| Cabbage | Jan 2 | Feb 13 – Feb 27 | Apr 24 – May 29 | Sep 11 – Sep 25 |
| Carrot | — | Feb 20 – Mar 6 | May 1 – Jun 12 | Sep 11 – Sep 25 |
| Beet | — | Feb 20 – Mar 6 | Apr 16 – May 28 | Sep 19 – Oct 3 |
| Radish | — | Feb 6 – Feb 20 | Mar 3 – Mar 31 | Oct 12 – Oct 26 |
| Onion (sets) | — | Feb 6 – Feb 20 | May 17 – Jun 21 | — |
| Garlic | — | Nov 13 – Dec 4 (fall) | May 25 – Jun 15 next year | — |
| Potato | — | Feb 20 – Mar 6 | May 21 – Jun 25 | — |
| Sweet potato | Feb 25 | Apr 8 – Apr 22 | Jul 17 – Aug 14 | — |
| Watermelon | — | Apr 8 – Apr 22 | Jul 2 – Aug 6 | — |
| Basil | Feb 25 | Apr 8 – Apr 22 | May 8 – Aug 14 | — |
| Strawberry (June-bearing) | — | Feb 20 – Mar 6 | Apr 10 – May 8 (once established) | — |
| Sunflower | — | Apr 8 – Apr 22 | Jun 27 – Aug 1 | — |
Dates for a typical spot in Arizona. Colder and higher places plant later, warmer ones earlier: enter your ZIP code for yours, or see the calendar for your zone.
Frost dates around Arizona
| Place | Zone | Last frost | First frost |
|---|---|---|---|
| Phoenix | 10a | Jan 14 | Dec 22 |
| Tucson | 9b | Feb 20 | Dec 4 |
| Mesa | 9b | Feb 1 | Dec 10 |
| Scottsdale | 9b | Feb 13 | Dec 5 |
| Glendale | 9b | Jan 14 | Dec 22 |
| Chandler | 9b | Feb 13 | Dec 5 |
| Peoria | 9b | Jan 20 | Dec 15 |
| Prescott | 7b | Apr 30 | Oct 20 |
| Tempe | 9b | Feb 13 | Dec 5 |
| Gilbert | 9b | Feb 1 | Dec 11 |
Average dates from the nearest NOAA weather stations (1991–2020). Click a place for its full planting calendar.