Plant Profile: Eupatorium perfoliatum

Eupatorium perfoliatum, commonly known as Boneset, is a robust perennial herb that forms dense clumps and produces small white flowers in late summer and autumn. This plant thrives in average to moderately wet soils that have a reliable water supply. It prefers full sunlight or partial shade and can adapt to both sandy and clayey soils. The soil should be rich in organic matter to help retain moisture. While Boneset can endure brief periods of flooding, it is not an aquatic plant. Its root system generates numerous rhizomes, allowing Boneset to create vegetative colonies.

Traditionally, Boneset was a staple in medicinal herb gardens and was utilized in folk medicine to treat various ailments, including influenza, fevers, colds, and other health issues. Some sources suggest that the name "Boneset" originates from its historical use in aiding the recovery of broken bones, while others believe it refers to its role as a diaphoretic in treating an 18th-century influenza known as "break bone fever." It is important to note that all parts of the plant are quite toxic and possess a bitter taste.

In 2003, Boneset was honored as the NC Wildflower of the Year, a recognition facilitated by the North Carolina Botanical Garden with support from the Garden Club of North Carolina.

Regarding plant health, Boneset does not face significant issues with insects or diseases. However, its foliage may suffer from scorching if the soil becomes too dry.