Blue Ridge Rs, AZ Frost Dates & Growing Season

The two dates every Blue Ridge Rs garden is planned around, plus ready-computed planting windows for the most popular crops.

Last spring frost
May 31
~50% chance of frost after
First fall frost
Oct 2
~50% chance of frost before
Growing season
124 days
frost-free stretch
USDA zone
≈ 6a
estimated from nearby reference
Risky (1 year in 10)MedianSafe (9 years in 10)
Last spring frost May 13 May 31 Jun 12
First fall frost Oct 15 Oct 2 Sep 22
Hard freeze (28°F), median last May 13 · first Oct 12

Computed from NOAA 1991–2020 climate normals at the BLUE RIDGE RS 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 Blue Ridge Rs

Computed from Blue Ridge Rs's own frost dates. Click any crop for the full zone-6 growing guide — varieties, spacing, fall plantings, and more.

CropStart seeds indoorsTransplantDirect sow
🍅 Tomatoes Apr 5 – Apr 19 Jun 7 – Jun 14
🫑 Peppers Mar 22 – Apr 5 Jun 14 – Jun 21
🥬 Lettuce Apr 19 – May 3 May 3 – May 17 May 3 – May 31
🫛 Peas Apr 19 – May 3
🥕 Carrots May 10 – May 31
🥦 Broccoli Apr 12 – Apr 26 May 10 – May 24
🥬 Kale Apr 19 – May 3 May 3 – May 17 May 3 – May 17
🥒 Cucumbers May 3 – May 10 Jun 7 – Jun 14 Jun 7 – Jun 14
🥒 Zucchini May 3 – May 10 Jun 7 – Jun 14 Jun 7 – Jun 14
🫘 Green Beans (Bush) Jun 7 – Jun 14
🌽 Sweet Corn Jun 7 – Jun 14
🌿 Basil Apr 19 – May 3 Jun 7 – Jun 14 Jun 14 – Jun 21
🧄 Garlic Fall: Aug 21 – Sep 18

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 Blue Ridge Rs's dates automatically after a lookup.

Reading the season in Blue Ridge Rs

At about 124 frost-free days, Blue Ridge Rs rewards efficiency: start warm-season crops indoors, favor short-season varieties, and lean on cold-tolerant crops — peas, kale, roots — that shrug off the shoulder-season frosts on either end.

Frequently asked questions

When is the last frost in Blue Ridge Rs, AZ?

The average last spring frost in Blue Ridge Rs is around May 31, 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 Blue Ridge Rs, AZ?

The average first fall frost in Blue Ridge Rs arrives around Oct 2. 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 Blue Ridge Rs?

About 124 frost-free days on average, from May 31 to Oct 2. That favors short-season varieties and transplants for warm-season crops, with cool-season vegetables doing the heavy lifting in spring and fall.

What USDA zone is Blue Ridge Rs in?

USDA zone 6a 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.