Scottsdale, AZ · zone 10a · ~310 frost-free days
When to plant a garden in Scottsdale.
In Scottsdale, the typical last spring frost lands around Feb 3 and the first fall frost around Dec 10, giving you about 310 frost-free days. Cool-season crops go out before the last frost; warm-season crops wait until after it.
The 2026 windows
Sow dates for Scottsdale, keyed to your frost.
| Crop | Start indoors | Spring sow / set out | Fall sow |
|---|---|---|---|
| Tomato, slicing | Dec 30 to Mar 1 | Feb 10 to Apr 12 | — |
| Lettuce, leaf | — | Jan 1 to Feb 10 | Sep 26 to Nov 25 |
| Carrot | — | Jan 1 to Jan 29 | Sep 14 to Oct 10 |
| Bush Bean | — | Feb 3 to Mar 26 | Aug 26 to Sep 28 |
| Cucumber, slicing | — | Feb 10 to May 12 | Aug 9 to Sep 9 |
| Pepper, bell | Jan 8 to Mar 1 | Feb 19 to Apr 12 | — |
| Kale | Nov 20 to Dec 13 | Jan 1 to Jan 24 | Sep 9 to Oct 25 |
| Spinach | — | Jan 1 to Jan 24 | Sep 26 to Nov 14 |
Scottsdale sits in Zone 10a, but two gardens in the same city can be a week or two apart. The planner works from your ZIP code's frost dates, not the zone, so the dates land right for your block, not the metro average.
Build your Scottsdale garden plan.
Tell the free planner what you want to eat and who you're feeding. It returns plant counts, spacing, and frost-safe sow dates for ZIP 85251 in about 60 seconds.