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Can You Grow Onion in Connecticut?
US · USDA Zone 6a · zones 5b, 6a, 6b
Onions grow well here — plant sets or transplants in early spring for a summer harvest.
Plant zones
Connecticut last frost
Connecticut first frost
Days to harvest
When to plant Onions in Connecticut
Start indoors
Transplant
Harvest
Dates are approximate, based on Connecticut'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 Connecticut
Connecticut has a humid continental climate with warm summers and cold winters. Four distinct seasons support a classic New England growing calendar.
Frequently asked questions
Can you grow Onion in Connecticut?
Onions grow well here — plant sets or transplants in early spring for a summer harvest.
What zone is Connecticut?
Connecticut spans USDA Zone 6a (5b, 6a, 6b).
When do you plant Onions in Connecticut?
Plant Onions around early April (start indoors Feb 3), harvest Jun 30 – Jul 30.