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Can You Grow Onion in New Brunswick?

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

Grows well here

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

Plant zones

2a–9b

New Brunswick last frost

mid-April

New Brunswick first frost

mid-October

Days to harvest

90–120 days

When to plant Onions in New Brunswick

Start indoors

Feb 17

Transplant

Apr 15

Harvest

Jul 14 – Aug 13

Dates are approximate, based on New Brunswick'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 New Brunswick

New Brunswick has a maritime continental climate. The Saint John River Valley is Zone 5b-6a. Four distinct seasons with a productive 5-6 month growing season. Known for potatoes, blueberries, and fiddleheads.

See what grows well in New Brunswick →

Frequently asked questions

Can you grow Onion in New Brunswick?

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

What zone is New Brunswick?

New Brunswick spans Canadian Zone 5 (4, 5, 6).

When do you plant Onions in New Brunswick?

Plant Onions around mid-April (start indoors Feb 17), harvest Jul 14 – Aug 13.