Eupatorium perfoliatum, known as common boneset or just boneset, is a North American perennial plant in the aster family. It is a common native to the Eastern United States and Canada, widespread from Nova Scotia to Florida, west as far as Texas, Nebraska, the Dakotas, and Manitoba. It is also called agueweed, feverwort, or sweating-plant.

Eupatorium perfoliatum is a specific butterfly food and habitat plant. It provides nectar for butterflies in the adult life cycle stage, particularly the white M hairstreak and the bronze copper butterfly.

Eupatorium perfoliatum grows up to 100 cm (39 inches) tall, with leaves that clasp the stems. The plant produces dense clusters of tiny white flower heads held above the foliage. It grows especially well in low, wet areas.

Type: Hardy perennial

Seeds per packet: 30

Location: Sun or part sun

Hardiness zones: 3-8

Height: 100 cm (39 inches) tall

Seeds per packet: 25