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Long Day Onions need 14 to 15 hours of daylight to form a bulb. If you plan to grow in more Northern US states with hard winters, Long Day Onions are your best choice. Typically planted in spring for mid to late summer harvest.

50 100 true //store.trueleafmarket.com/cdn/shop/t/54/assets/review-fallback.json?v=33078429469613971781712858278
Legend: H for Heirloom, O for Organic, A for AAS Winner, F for staff favorites
7 Items
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Onion-Utah-Yellow-Sweet-SpanishUtah Yellow Sweet Spanish Onion Seeds - Bulk
-0
Heirloom
Onion Seeds - Long - Utah Yellow Sweet Spanish
Starting at $2.49
Onion Walla Walla Organic SeedOnion Seeds - Walla Walla (Organic) - Packet
-0
Heirloom
Organic
Onion Seeds - Long - Walla Walla (Organic)
Starting at $3.89
Onion Walla Walla SeedPacket of Walla Walla Onion Seeds
-0
Heirloom
Onion Seeds - Long - Walla Walla
Starting at $2.49
Ruby Onion Vegetable SeedsRuby Onion Seed Packet
-0
Heirloom
Onion Seeds - Long - Ruby
Starting at $2.49
Onion - Long - Southport White Globe 404southport white globe 404 bunching onion seed packet
-0
Heirloom
Onion - Long - Southport White Globe 404
Starting at $2.79
Onion Seeds - Long - Southport Red Globe
Starting at $2.49
Onion Seeds - Long - Stuttgarter (Organic)
Starting at $3.89
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