Onions and garlic are some of the most popular vegetables to grow in the home garden. Members of the allium family, onions, shallots and garlic are easy to grow. They require full sun (six or more hours of direct sunlight daily) and well-drained soil that's rich in organic matter. When selecting onions for the home garden, you can choose onion sets, onion plants or onion seeds. Onion sets are the most popular because they are very easy to grow. Onion varieties include sweet varieties that are tops for fresh eating as well as storage onions. Shallots are treasured for their mild flavor, and garlic is a favorite for seasoning.