Calliham, TX Frost Dates & Growing Season

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

Last spring frost
Feb 9
~50% chance of frost after
First fall frost
Dec 8
~50% chance of frost before
Growing season
302 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 9 Feb 9 Mar 7
First fall frost Jan 5 Dec 8 Nov 16
Hard freeze (28°F), median last Jan 23 · first Dec 24

Computed from NOAA 1991–2020 climate normals at the CALLIHAM 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 Calliham

Computed from Calliham'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 15 – Dec 29 Feb 16 – Feb 23
🫑 Peppers Dec 1 – Dec 15 Feb 23 – Mar 2
🥬 Lettuce Dec 29 – Jan 12 Jan 12 – Jan 26 Jan 12 – Feb 9
🫛 Peas Dec 29 – Jan 12
🥕 Carrots Jan 19 – Feb 9
🥦 Broccoli Dec 22 – Jan 5 Jan 19 – Feb 2
🥬 Kale Dec 29 – Jan 12 Jan 12 – Jan 26 Jan 12 – Jan 26
🥒 Cucumbers Jan 12 – Jan 19 Feb 16 – Feb 23 Feb 16 – Feb 23
🥒 Zucchini Jan 12 – Jan 19 Feb 16 – Feb 23 Feb 16 – Feb 23
🫘 Green Beans (Bush) Feb 16 – Feb 23
🌽 Sweet Corn Feb 16 – Feb 23
🌿 Basil Dec 29 – Jan 12 Feb 16 – Feb 23 Feb 23 – Mar 2
🧄 Garlic Fall: Oct 27 – Nov 24

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 Calliham's dates automatically after a lookup.

Reading the season in Calliham

With roughly 302 frost-free days, Calliham 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 8 is late enough that fall planting is a full second season, not an afterthought.

Frequently asked questions

When is the last frost in Calliham, TX?

The average last spring frost in Calliham is around Feb 9, 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 Calliham, TX?

The average first fall frost in Calliham arrives around Dec 8. 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 Calliham?

About 302 frost-free days on average, from Feb 9 to Dec 8. That comfortably fits long-season crops like melons and winter squash, plus spring and fall plantings of cool-season vegetables.

What USDA zone is Calliham 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.