Cool-Season Vegetable

When to Plant Cabbage in Montana

A satisfying crop that stores well. Plant in spring or fall for crisp, dense heads.

The Short Answer

Cabbage are cold-tolerant and do well in Montana's humid climate. You can direct sow 4 weeks before your last frost — that's as early as May 10 - May 30 in Western Montana. Montana gardeners can also plant a fall crop. Alkaline soils common. Thin, dry soils in east. Better soils in valleys. Wind erosion challenges.

Montana Frost Dates

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

Region Zones Last Frost (Spring) First Frost (Fall)
Western Montana 4b, 5a, 5b May 10 - May 30 Sep 10 - Sep 30
Central Montana 3b, 4a, 4b May 15 - Jun 5 Sep 5 - Sep 20
Eastern Montana 3a, 3b, 4a May 10 - Jun 1 Sep 10 - Sep 25

Cabbage Planting Schedule for Montana

Western Montana (Zones 4b, 5a, 5b)

Average last frost: May 10 - May 30 · Average first frost: Sep 10 - Sep 30

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

Central Montana (Zones 3b, 4a, 4b)

Average last frost: May 15 - Jun 5 · Average first frost: Sep 5 - Sep 20

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

Eastern Montana (Zones 3a, 3b, 4a)

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

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

Growing Cabbage in Montana

Cabbage in Montana's Climate

Your cold climate is excellent cabbage country. Transplant 2-3 weeks before your last frost — cabbage handles frost well. Fall cabbage is equally rewarding: start indoors in mid-June, transplant in mid-July, and harvest dense, sweet heads after frost. Storage varieties like Danish Ballhead keep for months in a cold garage or root cellar.

Soil Considerations for Montana

Alkaline soils common. Thin, dry soils in east. Better soils in valleys. Wind erosion challenges.

Montana Climate & Growing Season

Short, intense growing season. Low humidity. Wide day-night temperature swings. Wind protection valuable. Cabbage can handle frost well, which is an advantage in Montana's climate. You can push planting dates earlier in spring and extend into fall.

Growing season length varies across Montana: Western Montana (4b, 5a, 5b) has a last frost around May 10 - May 30, while Eastern Montana (3a, 3b, 4a) sees frost end around May 10 - Jun 1. This difference matters for cabbage — but cabbage handle frost well, so the timing difference is less critical.

Growing Tips

Consistent watering prevents head splitting. Heads can handle light frost — it actually improves flavor.

Companion Planting

Plant cabbage alongside these companions for better growth:

Beets Celery Onions Dill

Keep cabbage away from:

Strawberries Tomatoes

The Bottom Line

Cabbage can be grown successfully across Montana, but your exact planting dates depend on which region you're in. Western Montana gardeners should plan around a May 10 - May 30 last frost, while those in Eastern Montana can typically plant later. For exact dates based on your zip code, use our free planting date finder.

Related Guides

Cabbage Growing Guide National planting guide with all states Montana Planting Calendar All plants for Montana Cabbage in Alabama Alabama planting dates Cabbage in Alaska Alaska planting dates Cabbage in Arizona Arizona planting dates Cabbage 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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