Can You Grow Onion in Maine?
US · USDA Zone 5a · zones 3b, 4a, 4b, 5a, 5b
Onions grow well here — plant sets or transplants in early spring for a summer harvest.
Plant zones
Maine last frost
Maine first frost
Days to harvest
When to plant Onions in Maine
Start indoors
Transplant
Harvest
Dates are approximate, based on Maine'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 Maine
Maine has a cool humid continental climate. Coastal areas are Zone 5b-6a; inland and northern Maine is Zone 3b-4a. Short summers but excellent for potatoes, blueberries, and cool crops.
Frequently asked questions
Can you grow Onion in Maine?
Onions grow well here — plant sets or transplants in early spring for a summer harvest.
What zone is Maine?
Maine spans USDA Zone 5a (3b, 4a, 4b, 5a, 5b).
When do you plant Onions in Maine?
Plant Onions around mid-April (start indoors Feb 17), harvest Jul 14 – Aug 13.