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Can You Grow Onion in Wyoming?
US · USDA Zone 4b · zones 3a, 3b, 4a, 4b, 5a, 5b
Onions grow well here — plant sets or transplants in early spring for a summer harvest.
Plant zones
Wyoming last frost
Wyoming first frost
Days to harvest
When to plant Onions in Wyoming
Start indoors
Transplant
Harvest
Dates are approximate, based on Wyoming'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 Wyoming
Wyoming has a semi-arid mountain climate with cold winters and short summers. Most of the state is Zone 4-5; protected low-elevation areas may reach Zone 5b-6a. Focus on hardy crops.
Frequently asked questions
Can you grow Onion in Wyoming?
Onions grow well here — plant sets or transplants in early spring for a summer harvest.
What zone is Wyoming?
Wyoming spans USDA Zone 4b (3a, 3b, 4a, 4b, 5a, 5b).
When do you plant Onions in Wyoming?
Plant Onions around mid-April (start indoors Feb 17), harvest Jul 14 – Aug 13.