Ansonia 1 NE, CT Frost Dates & Growing Season

The two dates every Ansonia 1 NE garden is planned around, plus ready-computed planting windows for the most popular crops.

Last spring frost
Apr 25
~50% chance of frost after
First fall frost
Oct 17
~50% chance of frost before
Growing season
175 days
frost-free stretch
USDA zone
≈ 6b
estimated from nearby reference
Risky (1 year in 10)MedianSafe (9 years in 10)
Last spring frost Apr 11 Apr 25 May 10
First fall frost Nov 1 Oct 17 Oct 4
Hard freeze (28°F), median last Apr 10 · first Oct 30

Computed from NOAA 1991–2020 climate normals at the ANSONIA 1 NE 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 Ansonia 1 NE

Computed from Ansonia 1 NE's own frost dates. Click any crop for the full zone-6 growing guide — varieties, spacing, fall plantings, and more.

CropStart seeds indoorsTransplantDirect sow
🍅 Tomatoes Feb 28 – Mar 14 May 2 – May 9
🫑 Peppers Feb 14 – Feb 28 May 9 – May 16
🥬 Lettuce Mar 14 – Mar 28 Mar 28 – Apr 11 Mar 28 – Apr 25
🫛 Peas Mar 14 – Mar 28
🥕 Carrots Apr 4 – Apr 25
🥦 Broccoli Mar 7 – Mar 21 Apr 4 – Apr 18
🥬 Kale Mar 14 – Mar 28 Mar 28 – Apr 11 Mar 28 – Apr 11
🥒 Cucumbers Mar 28 – Apr 4 May 2 – May 9 May 2 – May 9
🥒 Zucchini Mar 28 – Apr 4 May 2 – May 9 May 2 – May 9
🫘 Green Beans (Bush) May 2 – May 9
🌽 Sweet Corn May 2 – May 9
🌿 Basil Mar 14 – Mar 28 May 2 – May 9 May 9 – May 16
🧄 Garlic Fall: Sep 5 – Oct 3

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 Ansonia 1 NE's dates automatically after a lookup.

Reading the season in Ansonia 1 NE

Roughly 175 frost-free days gives Ansonia 1 NE gardeners room for nearly every common vegetable. Warm-season crops go out after Apr 25; a fall garden sown in late summer matures comfortably before the Oct 17 frost.

Frequently asked questions

When is the last frost in Ansonia 1 NE, CT?

The average last spring frost in Ansonia 1 NE is around Apr 25, 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 Ansonia 1 NE, CT?

The average first fall frost in Ansonia 1 NE arrives around Oct 17. 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 Ansonia 1 NE?

About 175 frost-free days on average, from Apr 25 to Oct 17. That fits nearly all common vegetables, though the longest-season melons and sweet potatoes benefit from transplants.

What USDA zone is Ansonia 1 NE in?

USDA zone 6b 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.