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Can You Grow Bok Choy in Wisconsin?

US · USDA Zone 5a · zones 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

Wisconsin last frost

mid-April

Wisconsin first frost

mid-October

Days to harvest

45–60 days

When to plant Bok Choys in Wisconsin

Start indoors

Mar 18

Transplant

Apr 15

Harvest

May 30 – Jun 14

Dates are approximate, based on Wisconsin'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 Wisconsin

Wisconsin has a cold humid continental climate. Milwaukee is Zone 5b-6a; northern Wisconsin is Zone 4a-5a. Cold winters but warm productive summers. Known for dairy farming and cold-hardy crops.