Decatur 4SE, AL Frost Dates & Growing Season

The two dates every Decatur 4SE garden is planned around, plus ready-computed planting windows for the most popular crops.

Last spring frost
Mar 26
~50% chance of frost after
First fall frost
Nov 7
~50% chance of frost before
Growing season
226 days
frost-free stretch
USDA zone
≈ 8a
estimated from nearby reference
Risky (1 year in 10)MedianSafe (9 years in 10)
Last spring frost Mar 5 Mar 26 Apr 9
First fall frost Nov 26 Nov 7 Oct 26
Hard freeze (28°F), median last Mar 12 · first Nov 19

Computed from NOAA 1991–2020 climate normals at the DECATUR 4SE 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 Decatur 4SE

Computed from Decatur 4SE'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 29 – Feb 12 Apr 2 – Apr 9
🫑 Peppers Jan 15 – Jan 29 Apr 9 – Apr 16
🥬 Lettuce Feb 12 – Feb 26 Feb 26 – Mar 12 Feb 26 – Mar 26
🫛 Peas Feb 12 – Feb 26
🥕 Carrots Mar 5 – Mar 26
🥦 Broccoli Feb 5 – Feb 19 Mar 5 – Mar 19
🥬 Kale Feb 12 – Feb 26 Feb 26 – Mar 12 Feb 26 – Mar 12
🥒 Cucumbers Feb 26 – Mar 5 Apr 2 – Apr 9 Apr 2 – Apr 9
🥒 Zucchini Feb 26 – Mar 5 Apr 2 – Apr 9 Apr 2 – Apr 9
🫘 Green Beans (Bush) Apr 2 – Apr 9
🌽 Sweet Corn Apr 2 – Apr 9
🌿 Basil Feb 12 – Feb 26 Apr 2 – Apr 9 Apr 9 – Apr 16
🧄 Garlic Fall: Sep 26 – Oct 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 Decatur 4SE's dates automatically after a lookup.

Reading the season in Decatur 4SE

With roughly 226 frost-free days, Decatur 4SE 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 7 is late enough that fall planting is a full second season, not an afterthought.

Frequently asked questions

When is the last frost in Decatur 4SE, AL?

The average last spring frost in Decatur 4SE is around Mar 26, 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 Decatur 4SE, AL?

The average first fall frost in Decatur 4SE arrives around Nov 7. 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 Decatur 4SE?

About 226 frost-free days on average, from Mar 26 to Nov 7. That comfortably fits long-season crops like melons and winter squash, plus spring and fall plantings of cool-season vegetables.

What USDA zone is Decatur 4SE in?

USDA zone 8a 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.