Picacho 8 SE, AZ Frost Dates & Growing Season

The two dates every Picacho 8 SE garden is planned around, plus ready-computed planting windows for the most popular crops.

Last spring frost
Feb 6
~50% chance of frost after
First fall frost
Dec 9
~50% chance of frost before
Growing season
306 days
frost-free stretch
USDA zone
≈ 9b
estimated from nearby reference
Risky (1 year in 10)MedianSafe (9 years in 10)
Last spring frost Jan 6 Feb 6 Mar 5
First fall frost Dec 26 Dec 9 Nov 22
Hard freeze (28°F), median last Jan 14 · first Dec 19

Computed from NOAA 1991–2020 climate normals at the PICACHO 8 SE station. "Safe" means frost past that date happens only about one year in ten. Your exact garden can still run days either way with elevation and terrain — check your own ZIP with the frost date lookup.

Planting windows for Picacho 8 SE

Computed from Picacho 8 SE's own frost dates. Click any crop for the full zone-9 growing guide — varieties, spacing, fall plantings, and more.

CropStart seeds indoorsTransplantDirect sow
🍅 Tomatoes Dec 12 – Dec 26 Feb 13 – Feb 20
🫑 Peppers Nov 28 – Dec 12 Feb 20 – Feb 27
🥬 Lettuce Dec 26 – Jan 9 Jan 9 – Jan 23 Jan 9 – Feb 6
🫛 Peas Dec 26 – Jan 9
🥕 Carrots Jan 16 – Feb 6
🥦 Broccoli Dec 19 – Jan 2 Jan 16 – Jan 30
🥬 Kale Dec 26 – Jan 9 Jan 9 – Jan 23 Jan 9 – Jan 23
🥒 Cucumbers Jan 9 – Jan 16 Feb 13 – Feb 20 Feb 13 – Feb 20
🥒 Zucchini Jan 9 – Jan 16 Feb 13 – Feb 20 Feb 13 – Feb 20
🫘 Green Beans (Bush) Feb 13 – Feb 20
🌽 Sweet Corn Feb 13 – Feb 20
🌿 Basil Dec 26 – Jan 9 Feb 13 – Feb 20 Feb 20 – Feb 27
🧄 Garlic Fall: Oct 28 – Nov 25

Want this for all 50 crops, or as a printable seed-shelf schedule? Use the planting calendar and the seed starting scheduler — both can use Picacho 8 SE's dates automatically after a lookup.

Reading the season in Picacho 8 SE

With roughly 306 frost-free days, Picacho 8 SE gardens fit long-season crops — melons, winter squash, sweet potatoes — with room left for spring and fall rounds of greens and roots. The first frost around Dec 9 is late enough that fall planting is a full second season, not an afterthought.

Frequently asked questions

When is the last frost in Picacho 8 SE, AZ?

The average last spring frost in Picacho 8 SE is around Feb 6, based on 1991–2020 climate normals. That's a median — about half of years see a later frost, so tender crops are safest going out a week or two after this date.

When is the first frost in Picacho 8 SE, AZ?

The average first fall frost in Picacho 8 SE arrives around Dec 9. Crops still in the garden need to mature before then, and frost-tender plants need harvesting or protection as the date approaches.

How long is the growing season in Picacho 8 SE?

About 306 frost-free days on average, from Feb 6 to Dec 9. That comfortably fits long-season crops like melons and winter squash, plus spring and fall plantings of cool-season vegetables.

What USDA zone is Picacho 8 SE in?

USDA zone 9b on the 2023 Plant Hardiness Zone Map. Note that zones describe winter cold, not frost timing — these frost dates are the numbers to plan plantings around.