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Can You Grow Bok Choy in Montana?

US · USDA Zone 4b · zones 3a, 3b, 4a, 4b, 5a, 5b

Grows well here

Bok choy grows reliably in your zone — it loves cool weather and handles light frosts.

Plant zones

4a–9b

Montana last frost

mid-April

Montana first frost

mid-October

Days to harvest

45–60 days

When to plant Bok Choys in Montana

Start indoors

Mar 18

Transplant

Apr 15

Harvest

May 30 – Jun 14

Dates are approximate, based on Montana's average frost dates. Your exact yard may vary by microclimate.

About Bok Choy

Bok choy is an Asian brassica that grows fast, tolerates light frost, and produces tender crisp leaves for stir-fries and soups. A reliable cool-season performer with two growing windows per year.

Start indoors 4-6 weeks before last frost or direct sow in fall. Harvest outer leaves continuously or cut the whole head at 2 inches above soil for regrowth. Keep moist — dry conditions trigger bolting.

Full bok choy growing guide →

Gardening in Montana

Montana has a semi-arid continental climate with cold winters and warm summers. Most of the state is Zone 4-5; protected valleys are Zone 5-6. Short but intense growing seasons.