Beautiful burgundy skin gives this large, firm, sweet onion its name. Perfect for storing, this long-day onion lasts up to 6 months. Reliable plants yield crunchy, aromatic bulbs. 120 days. Learn to Grow Ruby Red Onion Start Indoors: 4-6 weeks before transplanting Germination: 4-10 Days Plant Outdoors: 4-6 Apart Light: Full Sun Instructions - Sow seeds indoors in flats deep & space 1 in all directions. Transplant outdoors as soon as soil can be worked in spring. Keep onions well weeded with shallow cultivation. Onion Red Ruby Heirloom Seed 50