Karnes City 2N, TX Frost Dates & Growing Season

The two dates every Karnes City 2N garden is planned around, plus ready-computed planting windows for the most popular crops.

Last spring frost
Feb 16
~50% chance of frost after
First fall frost
Dec 9
~50% chance of frost before
Growing season
296 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 13 Feb 16 Mar 13
First fall frost Jan 10 Dec 9 Nov 20
Hard freeze (28°F), median last Jan 28 · first Dec 27

Computed from NOAA 1991–2020 climate normals at the KARNES CITY 2N 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 Karnes City 2N

Computed from Karnes City 2N'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 22 – Jan 5 Feb 23 – Mar 2
🫑 Peppers Dec 8 – Dec 22 Mar 2 – Mar 9
🥬 Lettuce Jan 5 – Jan 19 Jan 19 – Feb 2 Jan 19 – Feb 16
🫛 Peas Jan 5 – Jan 19
🥕 Carrots Jan 26 – Feb 16
🥦 Broccoli Dec 29 – Jan 12 Jan 26 – Feb 9
🥬 Kale Jan 5 – Jan 19 Jan 19 – Feb 2 Jan 19 – Feb 2
🥒 Cucumbers Jan 19 – Jan 26 Feb 23 – Mar 2 Feb 23 – Mar 2
🥒 Zucchini Jan 19 – Jan 26 Feb 23 – Mar 2 Feb 23 – Mar 2
🫘 Green Beans (Bush) Feb 23 – Mar 2
🌽 Sweet Corn Feb 23 – Mar 2
🌿 Basil Jan 5 – Jan 19 Feb 23 – Mar 2 Mar 2 – Mar 9
🧄 Garlic Fall: Oct 28 – Nov 25

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 Karnes City 2N's dates automatically after a lookup.

Reading the season in Karnes City 2N

With roughly 296 frost-free days, Karnes City 2N 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 9 is late enough that fall planting is a full second season, not an afterthought.

Frequently asked questions

When is the last frost in Karnes City 2N, TX?

The average last spring frost in Karnes City 2N is around Feb 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 Karnes City 2N, TX?

The average first fall frost in Karnes City 2N arrives around Dec 9. 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 Karnes City 2N?

About 296 frost-free days on average, from Feb 16 to Dec 9. That comfortably fits long-season crops like melons and winter squash, plus spring and fall plantings of cool-season vegetables.

What USDA zone is Karnes City 2N 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.