Cool-Season Vegetable

When to Plant Kale in Connecticut

The toughest green in the garden. Kale laughs at frost and actually tastes sweeter after a cold snap.

The Short Answer

Kale are cold-tolerant and do well in Connecticut's varied climate. You can direct sow 4 weeks before your last frost — that's as early as May 1 - May 15 in Northern Connecticut. Connecticut gardeners can also plant a fall crop. Rocky New England soil common. Acidic in many areas. Raised beds popular for dealing with rocky...

Connecticut Frost Dates

Your planting dates depend on which part of Connecticut you're in. Here are the frost date ranges by region:

Region Zones Last Frost (Spring) First Frost (Fall)
Northern Connecticut 5b, 6a May 1 - May 15 Sep 25 - Oct 10
Coastal Connecticut 6b, 7a Apr 15 - May 1 Oct 10 - Oct 25

Kale Planting Schedule for Connecticut

Northern Connecticut (Zones 5b, 6a)

Average last frost: May 1 - May 15 · Average first frost: Sep 25 - Oct 10

Start Seeds Indoors
4 wks before frost
Transplant Outside
3 wks before frost
Direct Sow
4 wks before frost
Fall Planting
8 wks before first frost

Coastal Connecticut (Zones 6b, 7a)

Average last frost: Apr 15 - May 1 · Average first frost: Oct 10 - Oct 25

Start Seeds Indoors
4 wks before frost
Transplant Outside
3 wks before frost
Direct Sow
4 wks before frost
Fall Planting
8 wks before first frost

Growing Kale in Connecticut

Kale in Connecticut's Climate

Kale grows from early spring through late fall in your climate — frost-tolerant enough to be one of the first and last crops of the season. Fall-harvested kale sweetened by frost is the highlight. Summer kale production may pause during the hottest weeks (above 85°F) but typically resumes as temperatures moderate.

Soil Considerations for Connecticut

Rocky New England soil common. Acidic in many areas. Raised beds popular for dealing with rocky ground.

Connecticut Climate & Growing Season

Four distinct seasons. Maritime influence moderates coastal temperatures. Shorter growing season inland. Kale can handle frost well, which is an advantage in Connecticut's climate. You can push planting dates earlier in spring and extend into fall.

Growing season length varies across Connecticut: Northern Connecticut (5b, 6a) has a last frost around May 1 - May 15, while Coastal Connecticut (6b, 7a) sees frost end around Apr 15 - May 1. This difference matters for kale — adjust your planting dates to match your specific region.

Growing Tips

Harvest outer leaves first, leaving the center to keep growing. Can survive temperatures down to 10°F with mulch protection.

Companion Planting

Plant kale alongside these companions for better growth:

Beets Celery Herbs Onions

Keep kale away from:

Strawberries Tomatoes

The Bottom Line

Kale can be grown successfully across Connecticut, but your exact planting dates depend on which region you're in. Northern Connecticut gardeners should plan around a May 1 - May 15 last frost, while those in Coastal Connecticut can typically plant earlier. For exact dates based on your zip code, use our free planting date finder.

Related Guides

Kale Growing Guide National planting guide with all states Connecticut Planting Calendar All plants for Connecticut Kale in Alabama Alabama planting dates Kale in Alaska Alaska planting dates Kale in Arizona Arizona planting dates Kale in Arkansas Arkansas planting dates
Note: All dates are based on NOAA 30-year Climate Normals and represent historical averages, not predictions for any specific year. Always check your local weather forecast before planting frost-sensitive crops. Learn about our data sources.

Last reviewed: March 29, 2026

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