Cool-Season Vegetable

When to Plant Cauliflower in North Carolina

The diva of the brassica family. More temperamental than broccoli but worth the extra attention.

The Short Answer

Cauliflower in North Carolina requires the Goldilocks approach — conditions must be just right. The mountain region's consistent cool temperatures provide the best conditions, while the Piedmont's variable fall weather makes cauliflower a bit of a gamble. But when it works, homegrown cauliflower from a North Carolina garden is exceptional.

North Carolina Frost Dates

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

Region Zones Last Frost (Spring) First Frost (Fall)
Mountains 5b, 6a, 6b Apr 25 - May 15 Sep 25 - Oct 10
Piedmont 7a, 7b Apr 1 - Apr 15 Oct 20 - Nov 5
Coastal Plain 7b, 8a Mar 15 - Apr 1 Nov 1 - Nov 15

Cauliflower Planting Schedule for North Carolina

Mountains (Zones 5b, 6a, 6b)

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

Start Seeds Indoors
6 wks before frost
Transplant Outside
2 wks before frost
Fall Planting
10 wks before first frost

Piedmont (Zones 7a, 7b)

Average last frost: Apr 1 - Apr 15 · Average first frost: Oct 20 - Nov 5

Start Seeds Indoors
6 wks before frost
Transplant Outside
2 wks before frost
Fall Planting
10 wks before first frost

Coastal Plain (Zones 7b, 8a)

Average last frost: Mar 15 - Apr 1 · Average first frost: Nov 1 - Nov 15

Start Seeds Indoors
6 wks before frost
Transplant Outside
2 wks before frost
Fall Planting
10 wks before first frost

Growing Cauliflower in North Carolina

State-Specific Growing Tips

Mountains: fall transplant late July. Piedmont: transplant late September. Coastal: transplant October-November. NC State Extension notes that cauliflower has the narrowest temperature tolerance of any brassica — it needs 60-70°F consistently during heading. Fall is the only reliable season outside the mountains.

Recommended Varieties for North Carolina

Snow Crown and Attribute (self-blanching) are NC State's most consistent recommendations. For the mountains, any variety works during the steady cool season.

Common Challenges in North Carolina

Buttoning from temperature stress. Cabbage worms. Downy mildew in humid conditions. The crop is significantly less reliable than broccoli or cabbage in North Carolina.

Growing Tips

Blanch white varieties by tying outer leaves over the head when it reaches 2 inches. Temperature swings cause buttoning.

Companion Planting

Plant cauliflower alongside these companions for better growth:

Beets Celery Onions

Keep cauliflower away from:

Strawberries Tomatoes

The Bottom Line

Cauliflower can be grown successfully in North Carolina with proper attention to regional frost dates and local growing conditions. Timing varies across the state — Mountains gardeners work with a last frost around Apr 25 - May 15, while Coastal Plain sees frost end around Mar 15 - Apr 1. Choose varieties suited to your region, amend your soil based on its specific needs, and monitor for the pests and diseases most common in your area. For exact dates based on your zip code, use our free planting date finder.

Related Guides

Cauliflower Growing Guide National planting guide with all states North Carolina Planting Calendar All plants for North Carolina Cauliflower in Alabama Alabama planting dates Cauliflower in Alaska Alaska planting dates Cauliflower in Arizona Arizona planting dates Cauliflower 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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