Common Boneset (Eupatorium perfoliatum) is a tall, moisture-loving perennial native to the eastern and central United States and Canada. It typically grows 4 to 6 feet tall with distinctive perfoliate leaves—paired, lance-shaped leaves that appear to be pierced by the central stem. From mid to late summer (July through September), it produces broad, flat clusters of small, fluffy white flowers that attract a wide range of pollinators. It thrives in full sun to part shade and prefers moist to wet soils, making it ideal for rain gardens, stream edges, wet meadows, and other damp habitats.
Ecologically, Common Boneset is a powerful pollinator plant. Its nectar-rich blooms draw native bees, butterflies, beetles, and beneficial wasps. It also serves as a host plant for several native moths, including the Three-lined Flower Moth (Schinia trifascia), Boneset Borer Moth (Carmenta pyralidiformis), and Clymene Moth (Haploa clymene), and its seeds are consumed by wetland birds like the Swamp Sparrow. In addition to its ecological value, Boneset has a long history of medicinal use by Indigenous peoples and early settlers. It was widely used as a remedy for fevers, colds, and flu-like symptoms—earning it names like “feverwort” and “agueweed.” The name “boneset” is thought to refer to its use in treating the intense muscle pain associated with “breakbone fever” (dengue). However, caution is warranted: all parts of the plant can be toxic in large quantities and should not be used without proper guidance.
