Death Valley National Park, CA Frost Dates & Growing Season

The two dates every Death Valley National Park garden is planned around, plus ready-computed planting windows for the most popular crops.

Last spring frost
Jan 1
~50% chance of frost after
First fall frost
Dec 19
~50% chance of frost before
Growing season
352 days
frost-free stretch
USDA zone
≈ 10b
estimated from nearby reference
Risky (1 year in 10)MedianSafe (9 years in 10)
Last spring frost Dec 14 Jan 1 Jan 21
First fall frost Jan 4 Dec 19 Dec 4
Hard freeze (28°F), median last Dec 27 · first Dec 25

Computed from NOAA 1991–2020 climate normals at the DEATH VALLEY NP 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 Death Valley National Park

Computed from Death Valley National Park's own frost dates. Click any crop for the full zone-10 growing guide — varieties, spacing, fall plantings, and more.

CropStart seeds indoorsTransplantDirect sow
🍅 Tomatoes Nov 6 – Nov 20 Jan 8 – Jan 15
🫑 Peppers Oct 23 – Nov 6 Jan 15 – Jan 22
🥬 Lettuce Nov 20 – Dec 4 Dec 4 – Dec 18 Dec 4 – Jan 1
🫛 Peas Nov 20 – Dec 4
🥕 Carrots Dec 11 – Jan 1
🥦 Broccoli Nov 13 – Nov 27 Dec 11 – Dec 25
🥬 Kale Nov 20 – Dec 4 Dec 4 – Dec 18 Dec 4 – Dec 18
🥒 Cucumbers Dec 4 – Dec 11 Jan 8 – Jan 15 Jan 8 – Jan 15
🥒 Zucchini Dec 4 – Dec 11 Jan 8 – Jan 15 Jan 8 – Jan 15
🫘 Green Beans (Bush) Jan 8 – Jan 15
🌽 Sweet Corn Jan 8 – Jan 15
🌿 Basil Nov 20 – Dec 4 Jan 8 – Jan 15 Jan 15 – Jan 22
🧄 Garlic Fall: Nov 7 – Dec 5

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 Death Valley National Park's dates automatically after a lookup.

Reading the season in Death Valley National Park

With roughly 352 frost-free days, Death Valley National Park 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 19 is late enough that fall planting is a full second season, not an afterthought.

Frequently asked questions

When is the last frost in Death Valley National Park, CA?

The average last spring frost in Death Valley National Park is around Jan 1, 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 Death Valley National Park, CA?

The average first fall frost in Death Valley National Park arrives around Dec 19. 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 Death Valley National Park?

About 352 frost-free days on average, from Jan 1 to Dec 19. That comfortably fits long-season crops like melons and winter squash, plus spring and fall plantings of cool-season vegetables.

What USDA zone is Death Valley National Park in?

USDA zone 10b 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.