The popularity of these ornamental onions shows no sign of waning - and with good reason, for they are a dramatic addition to any hot sunny border. As a general rule the foliage will emerge first and then die down as the flower stems emerge. It is often best to plant them with other plants that will mask the unsightly foliage as it dies back. After flowering we find it important to dead head them by removing the flower head but leaving the flower stalk. This will allow the plant to put enough energy back into the bulb to ensure a good show the following year. If you want to preserve the seed heads on the plant to provide winter interest wait until the bulb is old enough to produce several flower heads and then remove half after flowering, providing you and the bulb with a good compromise.