Planting dates for Phoenix
Frost dates and sow windows from the 30-year record at Phoenix Deer Valley Muni Ap, the official station 27 km from Phoenix, Arizona.
Sow and transplant events for the staples, straight from this page.
Key windows for Phoenix (2026)
| Crop | Start indoors | Plant out / sow |
|---|---|---|
| Tomato | November 27 | January 15 |
| Pepper | November 13 | January 22 |
| Peas | – | December 4 |
| Lettuce | November 13 | December 11 |
| Carrot | – | December 18 |
| Bush beans | – | January 15 |
| Garlic | – | Fall planted |
| Potato | – | December 25 |
Mean-date planning windows, not guarantees; watch the local forecast at the shoulders. Method on the methodology page.
Phoenix planting questions
When is the last frost in Phoenix?
Around January 8, the 30-year mean date of the last spring frost at Phoenix Deer Valley Muni Ap, the official station 27 km from Phoenix. Half of years see frost after the mean, so tender crops usually wait a week or more past it.
When can I plant tomatoes in Phoenix?
Start seeds indoors around November 27 and transplant around January 15, once nights hold above 50F. The full 32-crop table on the planner computes every window for Phoenix.
How long is the growing season in Phoenix?
About 354 frost-free days on average, from roughly January 8 to December 25. Crops whose days-to-maturity exceed that window need transplants, short-season varieties, or season extension.
How this page was made
Every date above is computed from the NOAA NCEI U.S. Climate Normals at Phoenix Deer Valley Muni Ap: the 30-year mean dates of last spring and first fall frost, with crop offsets from standard horticultural practice. Full method and crop sources: data and methodology. These are planning averages, not forecasts: half of years frost later than the mean, so harden off transplants and watch the local forecast at the shoulders of the season.
More for Phoenix: winter tire dates. Need every crop, or a different place? The full calendar covers 32 crops at 2697 stations.