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Can You Grow Onion in Manitoba?

Canada · Canadian Zone 3 · zones 2, 3, 4

Grows well here

Onions grow well here — plant sets or transplants in early spring for a summer harvest.

Plant zones

2a–9b

Manitoba last frost

mid-May

Manitoba first frost

late September

Days to harvest

90–120 days

When to plant Onions in Manitoba

Start indoors

Mar 20

Transplant

May 15

Harvest

Aug 13 – Sep 12

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

About Onion

Onions are a staple crop that stores well and can be grown as sets transplants or from seed.

Growing from sets is easiest for beginners. Plant in early spring — onions are frost-tolerant. Day-length sensitive — choose short-day long-day or day-neutral varieties based on your latitude.

Full onion growing guide →

Gardening in Manitoba

Manitoba has a cold continental climate. Winnipeg is Zone 3b-4a. Cold winters and hot summers make for an intense but short growing season. Excellent for sunflowers, canola, and cool-season vegetables.

See what grows well in Manitoba →

Frequently asked questions

Can you grow Onion in Manitoba?

Onions grow well here — plant sets or transplants in early spring for a summer harvest.

What zone is Manitoba?

Manitoba spans Canadian Zone 3 (2, 3, 4).

When do you plant Onions in Manitoba?

Plant Onions around mid-May (start indoors Mar 20), harvest Aug 13 – Sep 12.