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Can You Grow Bok Choy in Ontario?

Canada · Canadian Zone 5 · zones 3, 4, 5, 6, 7

Grows well here

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

Plant zones

4a–9b

Ontario last frost

mid-April

Ontario first frost

mid-October

Days to harvest

45–60 days

When to plant Bok Choys in Ontario

Start indoors

Mar 18

Transplant

Apr 15

Harvest

May 30 – Jun 14

Dates are approximate, based on Ontario'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 Ontario

Ontario spans several climate zones. Northern Ontario is Zone 3-4 with short seasons; southern Ontario is Zone 5-7 with long productive seasons. The Niagara Peninsula is one of Canada's premier fruit-growing regions.