Can You Grow Onion in Alaska?
US · USDA Zone 4b · zones 1a, 1b, 2a, 2b
Onions grow well here — plant sets or transplants in early spring for a summer harvest.
Plant zones
Alaska last frost
Alaska first frost
Days to harvest
When to plant Onions in Alaska
Start indoors
Transplant
Harvest
Dates are approximate, based on Alaska'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.
Gardening in Alaska
Alaska ranges from subarctic to maritime climates. The interior has very short summers but intense sunlight. Coastal areas are milder. Cold-hardy crops and greenhouses are key.
Frequently asked questions
Can you grow Onion in Alaska?
Onions grow well here — plant sets or transplants in early spring for a summer harvest.
What zone is Alaska?
Alaska spans USDA Zone 4b (1a, 1b, 2a, 2b).
When do you plant Onions in Alaska?
Plant Onions around mid-April (start indoors Feb 17), harvest Jul 14 – Aug 13.