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Can You Grow Onion in Alberta?

Canada · Canadian Zone 4 · zones 2, 3, 4, 5

Grows well here

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

Plant zones

2a–9b

Alberta last frost

early May

Alberta first frost

early October

Days to harvest

90–120 days

When to plant Onions in Alberta

Start indoors

Mar 5

Transplant

May 1

Harvest

Jul 30 – Aug 29

Dates are approximate, based on Alberta'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 Alberta

Alberta has a dry continental climate with cold winters and warm summers. Calgary and Edmonton are Zone 4-5. Intense sunshine compensates for the short season. Chinook winds bring warm spells in winter.