U.S. native produces bright orange-red flowers worthy of attention as an ornamental. It is an ancient medicinal. The roots act specifically on the lungs as an expcectorant and anti-inflammatory. Its more common use in our modern gardens though, is to attract butterflies, especially Monarch caterpillars. It is easy to grow, although can become infested with aphids during the summer. Most parts of this plant are toxic to humans. Another common name is Pleurisy Root.