Formosan Butterbur (Petasites Formosanus) is a perennial herb in the Asteraceae family with moderate care difficulty. It requires high watering and partial shade or full shade light in USDA hardiness zones 7-9. This plant is toxic to cats and dogs — keep it out of reach of pets.

Petasites formosanus is a perennial herb native to Taiwan, notable for its large, heart-shaped leaves and preference for damp, shaded environments.