Cooper Dam, TX Frost Dates & Growing Season

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

Last spring frost
Mar 18
~50% chance of frost after
First fall frost
Nov 13
~50% chance of frost before
Growing season
240 days
frost-free stretch
USDA zone
≈ 8b
estimated from nearby reference
Risky (1 year in 10)MedianSafe (9 years in 10)
Last spring frost Mar 1 Mar 18 Apr 1
First fall frost Dec 1 Nov 13 Oct 30
Hard freeze (28°F), median last Mar 6 · first Nov 26

Computed from NOAA 1991–2020 climate normals at the COOPER DAM 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 Cooper Dam

Computed from Cooper Dam's own frost dates. Click any crop for the full zone-8 growing guide — varieties, spacing, fall plantings, and more.

CropStart seeds indoorsTransplantDirect sow
🍅 Tomatoes Jan 21 – Feb 4 Mar 25 – Apr 1
🫑 Peppers Jan 7 – Jan 21 Apr 1 – Apr 8
🥬 Lettuce Feb 4 – Feb 18 Feb 18 – Mar 4 Feb 18 – Mar 18
🫛 Peas Feb 4 – Feb 18
🥕 Carrots Feb 25 – Mar 18
🥦 Broccoli Jan 28 – Feb 11 Feb 25 – Mar 11
🥬 Kale Feb 4 – Feb 18 Feb 18 – Mar 4 Feb 18 – Mar 4
🥒 Cucumbers Feb 18 – Feb 25 Mar 25 – Apr 1 Mar 25 – Apr 1
🥒 Zucchini Feb 18 – Feb 25 Mar 25 – Apr 1 Mar 25 – Apr 1
🫘 Green Beans (Bush) Mar 25 – Apr 1
🌽 Sweet Corn Mar 25 – Apr 1
🌿 Basil Feb 4 – Feb 18 Mar 25 – Apr 1 Apr 1 – Apr 8
🧄 Garlic Fall: Oct 2 – Oct 30

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 Cooper Dam's dates automatically after a lookup.

Reading the season in Cooper Dam

With roughly 240 frost-free days, Cooper Dam 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 Nov 13 is late enough that fall planting is a full second season, not an afterthought.

Frequently asked questions

When is the last frost in Cooper Dam, TX?

The average last spring frost in Cooper Dam is around Mar 18, 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 Cooper Dam, TX?

The average first fall frost in Cooper Dam arrives around Nov 13. 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 Cooper Dam?

About 240 frost-free days on average, from Mar 18 to Nov 13. That comfortably fits long-season crops like melons and winter squash, plus spring and fall plantings of cool-season vegetables.

What USDA zone is Cooper Dam in?

USDA zone 8b 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.