Cool-Season Vegetable

When to Plant Cauliflower in Vermont

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

The Short Answer

Cauliflower are cold-tolerant and do well in Vermont's varied climate. Vermont gardeners can also plant a fall crop. Rocky, acidic soils typical of New England. Glacial deposits. Thin mountain soils. Raised beds very...

Vermont Frost Dates

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

Region Zones Last Frost (Spring) First Frost (Fall)
Northern Vermont 3b, 4a May 20 - Jun 5 Sep 5 - Sep 20
Central Vermont 4a, 4b, 5a May 10 - May 25 Sep 15 - Oct 1
Southern Vermont 4b, 5a, 5b May 5 - May 20 Sep 20 - Oct 5

Cauliflower Planting Schedule for Vermont

Northern Vermont (Zones 3b, 4a)

Average last frost: May 20 - Jun 5 · Average first frost: Sep 5 - Sep 20

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

Central Vermont (Zones 4a, 4b, 5a)

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

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

Southern Vermont (Zones 4b, 5a, 5b)

Average last frost: May 5 - May 20 · Average first frost: Sep 20 - Oct 5

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

Growing Cauliflower in Vermont

Cauliflower in Vermont's Climate

Cauliflower is more demanding than broccoli — it needs steady 60-70°F temperatures during heading, which your unpredictable spring weather may not provide. Fall is the better season: start indoors in mid-June, transplant in mid-July, and let the gradual autumn cool-down produce tight, clean heads. Temperature swings cause buttoning (premature tiny heads).

Soil Considerations for Vermont

Rocky, acidic soils typical of New England. Glacial deposits. Thin mountain soils. Raised beds very popular.

Vermont Climate & Growing Season

Short growing season. Cold winters. Cool summers. Long summer days help compensate. Season extension techniques valuable.

Growing season length varies across Vermont: Northern Vermont (3b, 4a) has a last frost around May 20 - Jun 5, while Southern Vermont (4b, 5a, 5b) sees frost end around May 5 - May 20. This difference matters for cauliflower — adjust your planting dates to match your specific region.

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 across Vermont, but your exact planting dates depend on which region you're in. Northern Vermont gardeners should plan around a May 20 - Jun 5 last frost, while those in Southern Vermont can typically plant earlier. 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 Vermont Planting Calendar All plants for Vermont 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

Ready to Start Planting?

Enter your zip code and pick your plant. We'll tell you exactly when to plant, start seeds, and harvest — based on where you live.

Find Your Planting Dates