This one truly thrives on neglect. A member of the lily family from South Africa, it’s an old favorite that’s easy-to-grow and puts on a fanciful display. In late winter, vining stems emerge from the bulb, or “onion.” With great vigor and determination, they grow up any nearby support. As they mature, dense lacy branches form and give a full appearance. When fall arrives, the growth dies back and the Climbing Onion goes into a period of dormancy.