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Can You Grow Onion in North Dakota?

US · USDA Zone 4a · zones 3a, 3b, 4a, 4b

Grows well here

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

Plant zones

2a–9b

North Dakota last frost

late April

North Dakota first frost

early October

Days to harvest

90–120 days

When to plant Onions in North Dakota

Start indoors

Feb 27

Transplant

Apr 25

Harvest

Jul 24 – Aug 23

Dates are approximate, based on North Dakota'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 North Dakota

North Dakota has a harsh continental climate with cold winters and short warm summers. Most of the state is Zone 3b-4a. Focus on cold-hardy crops and short-season varieties.

See what grows well in North Dakota →

Frequently asked questions

Can you grow Onion in North Dakota?

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

What zone is North Dakota?

North Dakota spans USDA Zone 4a (3a, 3b, 4a, 4b).

When do you plant Onions in North Dakota?

Plant Onions around late April (start indoors Feb 27), harvest Jul 24 – Aug 23.