Ft Huachuca Pioneer Airfield, AZ Frost Dates & Growing Season

The two dates every Ft Huachuca Pioneer Airfield garden is planned around, plus ready-computed planting windows for the most popular crops.

Last spring frost
Mar 16
~50% chance of frost after
First fall frost
Nov 21
~50% chance of frost before
Growing season
250 days
frost-free stretch
USDA zone
≈ 9b
estimated from nearby reference
Risky (1 year in 10)MedianSafe (9 years in 10)
Last spring frost Feb 19 Mar 16 Apr 12
First fall frost Dec 7 Nov 21 Nov 3
Hard freeze (28°F), median last Feb 20 · first Dec 6

Computed from NOAA 1991–2020 climate normals at the FT HUACHUCA PIONEER AIRFIELD 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 Ft Huachuca Pioneer Airfield

Computed from Ft Huachuca Pioneer Airfield'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 Jan 19 – Feb 2 Mar 23 – Mar 30
🫑 Peppers Jan 5 – Jan 19 Mar 30 – Apr 6
🥬 Lettuce Feb 2 – Feb 16 Feb 16 – Mar 2 Feb 16 – Mar 16
🫛 Peas Feb 2 – Feb 16
🥕 Carrots Feb 23 – Mar 16
🥦 Broccoli Jan 26 – Feb 9 Feb 23 – Mar 9
🥬 Kale Feb 2 – Feb 16 Feb 16 – Mar 2 Feb 16 – Mar 2
🥒 Cucumbers Feb 16 – Feb 23 Mar 23 – Mar 30 Mar 23 – Mar 30
🥒 Zucchini Feb 16 – Feb 23 Mar 23 – Mar 30 Mar 23 – Mar 30
🫘 Green Beans (Bush) Mar 23 – Mar 30
🌽 Sweet Corn Mar 23 – Mar 30
🌿 Basil Feb 2 – Feb 16 Mar 23 – Mar 30 Mar 30 – Apr 6
🧄 Garlic Fall: Oct 10 – Nov 7

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 Ft Huachuca Pioneer Airfield's dates automatically after a lookup.

Reading the season in Ft Huachuca Pioneer Airfield

With roughly 250 frost-free days, Ft Huachuca Pioneer Airfield 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 Nov 21 is late enough that fall planting is a full second season, not an afterthought.

Frequently asked questions

When is the last frost in Ft Huachuca Pioneer Airfield, AZ?

The average last spring frost in Ft Huachuca Pioneer Airfield is around Mar 16, 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 Ft Huachuca Pioneer Airfield, AZ?

The average first fall frost in Ft Huachuca Pioneer Airfield arrives around Nov 21. 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 Ft Huachuca Pioneer Airfield?

About 250 frost-free days on average, from Mar 16 to Nov 21. That comfortably fits long-season crops like melons and winter squash, plus spring and fall plantings of cool-season vegetables.

What USDA zone is Ft Huachuca Pioneer Airfield 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.