Onion sets are small onion bulbs usually less than 1" in size. Growing onions from sets is one of the easiest and most dependable ways for the home gardener to grow either small green salad onions or large storage onions. Certified Organic onion sets are available from Stargazer Perennials Farm and Nursery starting in March of every year, and can be planted as early as the soil can be worked into any well-drained garden soil with good organic tilth. Onions have very low nitrogen requirements so additional fertilizers are usually not required. Be sure to amend your garden soil only with well aged compost. Do not amend your garden soil with fresh manures of any kind.
Growing Large Onions From Sets: Plant sets in early spring as soon as the soil can be worked and has lost its winter sogginess. Plant sets 3-4" apart in rows about one foot apart. Plant the sets one inch deep. Onions have shallow roots so water regularly giving them at least an inch per week. With their shallow roots onions cannot compete with weeds for water or nutrients, so pull weeds relentlessly! Late in the summer or fall the tops will fall over by themselves, or for a more uniform harvest you can bend them all over at once and let the tops wilt. Lift the onions carefully and dry in the sun or filtered shade for about ten days, or until the skins are dry and papery. Store onions in a cool, dry dark room and check often for neck rot or soft spots. Use onions with soft spots immediately and keep the stored onions loosely stored or if possible not touching each other at all.

