Onions can be started from seed indoors 4 - 6 weeks before you plan to plant or from sets of starter onions; they can also be sown directly in the garden once the last frost date has passed. plant one to two inches apart.
Onions are quick to mature, so it's a good idea to make several plantings throughout the spring and into the mid summer ensuring a regular harvest all season.
Onions should be grown in fertile, moist and well drained soil that has full sun exposer all day. Onions need a generous amount of water, but they will rot in very wet soil. Keep the area well weeded, onions do not do well in competition with other plants. Use a layer of mulch to keep down weed growth and conserve moisture.
Problems you'll face when growing onions are rot and onion maggots. Rot is the most common problem, and it is caused by excessive watering and soil that does not drain well. Onion maggots destroy the onion the stems, and will eventually killing the plant. To avoid these problems, make sure to rotate your garden.
When onion tops turn yellow, bend them over horizontally. This diverts the all the plant's energy into maturing the bulb. When the tops turn brown, pull or dig the bulbs up and leave them to dry in the sun.
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