Sweet Mild: For big bulbs, raise transplants from Feb-mid March. Transplant into the garden in mid-April. Harvest when tops start to fall down mid-August to mid-September.
Storage: Start inside in March, or direct-seed in April. Harvest when tops start to fall down mid-August to mid-September.
Overwinter: Direct-seed in mid-August, or raise transplants to set outside in September. Starting on a seedbed at the beginning of August, these small plants will be moved to rows in the spring. Harvest when the tops start to fall down the next June.
Scallions: Direct-seed from April to August, or sow 3 seeds in each cell of a 72 cell tray, and transplant as a clump. Space clumps 15cm (6") apart.
 
Seeds will emerge in 6-12 days, depending on soil temperature. Optimum soil temperature 16-25 C (50-75 F). In optimal conditions, at least 75% of the seeds will germinate. Usual seed life: 1 year.
 
Garden: if direct-seeding: rows 30cm (1') apart, 2 seeds/cm (1/2"), 0.5cm (1/4") deep. Thin to 5-10cm (2-4") apart. Farm: 100' row of storage onions: 28g, of scallions 120g. Acre: storage onions: 1.5kg, scallions: 6-7kg.