These onion and shallot offerings are seeds, not sets. You will enjoy a better harvest, with larger, more flavourful bulbs if you start these plants from seed. The bulbing onions we sell are long-day or day-neutral. They will not perform in the southern US where short-day onions are required. Onions are members of the lily family and have been used for thousands of years for their medicinal properties–more important than the vitamins and minerals they contain. Today, research is showing the value of the antioxidants in onions as anti-cancer agents.