A really unusual ornamental onion, with an umbrella of hanging, bell-shaped, creamy green flowers flushed with lilac on stiff stems in May and June. This tall, exotic-looking, bulbous perennial will add vertical interest in a sunny, well-drained border and thrives in partial shade, too. As the flowers fade, they turn upright to form curious, shuttlecock-like seedheads that extend the season of interest and add a twist to flower arrangements.