Brian Head, UT Frost Dates & Growing Season

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

Last spring frost
Jun 21
~50% chance of frost after
First fall frost
Sep 12
~50% chance of frost before
Growing season
83 days
frost-free stretch
USDA zone
≈ 6a
estimated from nearby reference
Risky (1 year in 10)MedianSafe (9 years in 10)
Last spring frost Jun 6 Jun 21 Jul 6
First fall frost Sep 23 Sep 12 Sep 1
Hard freeze (28°F), median last Jun 7 · first Sep 22

Computed from NOAA 1991–2020 climate normals at the BRIAN HEAD 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 Brian Head

Computed from Brian Head'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 26 – May 10 Jun 28 – Jul 5
🫑 Peppers Apr 12 – Apr 26 Jul 5 – Jul 12
🥬 Lettuce May 10 – May 24 May 24 – Jun 7 May 24 – Jun 21
🫛 Peas May 10 – May 24
🥕 Carrots May 31 – Jun 21
🥦 Broccoli May 3 – May 17 May 31 – Jun 14
🥬 Kale May 10 – May 24 May 24 – Jun 7 May 24 – Jun 7
🥒 Cucumbers May 24 – May 31 Jun 28 – Jul 5 Jun 28 – Jul 5
🥒 Zucchini May 24 – May 31 Jun 28 – Jul 5 Jun 28 – Jul 5
🫘 Green Beans (Bush) Jun 28 – Jul 5
🌽 Sweet Corn Jun 28 – Jul 5
🌿 Basil May 10 – May 24 Jun 28 – Jul 5 Jul 5 – Jul 12
🧄 Garlic Fall: Aug 1 – Aug 29

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 Brian Head's dates automatically after a lookup.

Reading the season in Brian Head

At about 83 frost-free days, Brian Head 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 Brian Head, UT?

The average last spring frost in Brian Head is around Jun 21, 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 Brian Head, UT?

The average first fall frost in Brian Head arrives around Sep 12. 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 Brian Head?

About 83 frost-free days on average, from Jun 21 to Sep 12. 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 Brian Head 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.