Liatris

Liatris, or gayfather, is a genus of flowering plants. It is in the sunflower family of the boneset tribe. It is native to North America (Canada, United States, Mexico and the Bahamas). Its most common name is blazing star.
They are perennials, meaning they grow leaves and flowers every year. They survive winter as corms.
"Liatris" species are used as food by the larvae of some butterflies and moths. The bleeding flower moth's larvae only feed on "Liatris".