Cool-Season Vegetable

When to Plant Cauliflower in Nebraska

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 Nebraska's varied climate. Nebraska gardeners can also plant a fall crop. Rich prairie soils in east. Sandy soils in Sandhills region. Loess deposits along Missouri River.

Nebraska Frost Dates

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

Region	Zones	Last Frost (Spring)	First Frost (Fall)
Northern/Western Nebraska	4a, 4b	May 5 - May 20	Sep 20 - Oct 5
Eastern Nebraska	5a, 5b	Apr 25 - May 10	Oct 1 - Oct 15

Cauliflower Planting Schedule for Nebraska

Northern/Western Nebraska (Zones 4a, 4b)

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

Eastern Nebraska (Zones 5a, 5b)

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

Start Seeds Indoors

6 wks before frost

Transplant Outside

2 wks before frost

Fall Planting

10 wks before first frost

Growing Cauliflower in Nebraska

Cauliflower in Nebraska'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 Nebraska

Rich prairie soils in east. Sandy soils in Sandhills region. Loess deposits along Missouri River.

Nebraska Climate & Growing Season

Continental climate. Hot summers, cold winters. Adequate growing season in east. Drier in west — irrigation may be needed.

Growing season length varies across Nebraska: Northern/Western Nebraska (4a, 4b) has a last frost around May 5 - May 20, while Eastern Nebraska (5a, 5b) sees frost end around Apr 25 - May 10. 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 Nebraska, but your exact planting dates depend on which region you're in. Northern/Western Nebraska gardeners should plan around a May 5 - May 20 last frost, while those in Eastern Nebraska can typically plant earlier. For exact dates based on your zip code, use our free planting date finder.

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