Long Day Onion Plants

Available January 1, 2024—May 12, 2024

Long day sweet and storage onion varieties do well in the northern states that have between 14-16 hours of daylight length. Long day sweet onion varieties generally mature a few weeks before long day storage onion varieties and will keep from one to four months, so eat them first. These varieties will do best from the Midwest to the Canadian border. If planted early, long day onion varieties will do well in the northern half of the intermediate day areas.

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