This spring bloomer produces bright chartreuse floral domes atop bract-like, rounded leaves that are pierced by the flower's stem. This plant's form and color contrast well with spring bulbs. It grows 3 feet tall and 2 feet wide. Let it regenerate itself by self-sowing. It is a biennial or short-lived perennial that makes an excellent cut flower and produces worthy combinations with neighboring shades of maroons and blues. Grow it in large, mixed borders, naturalistic plantings, and open woodlands.