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Can You Grow Onion in Kentucky?

US · USDA Zone 6b · zones 5b, 6a, 6b, 7a

Grows well here

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

Plant zones

2a–9b

Kentucky last frost

mid-March

Kentucky first frost

mid-November

Days to harvest

90–120 days

When to plant Onions in Kentucky

Start indoors

Jan 17

Transplant

Mar 15

Harvest

Jun 13 – Jul 13

Dates are approximate, based on Kentucky'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 Kentucky

Kentucky has a humid continental climate transitioning to subtropical in the south. Long warm summers support tomatoes, peppers, and most common vegetables. Tobacco country.

See what grows well in Kentucky →

Frequently asked questions

Can you grow Onion in Kentucky?

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

What zone is Kentucky?

Kentucky spans USDA Zone 6b (5b, 6a, 6b, 7a).

When do you plant Onions in Kentucky?

Plant Onions around mid-March (start indoors Jan 17), harvest Jun 13 – Jul 13.