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Boneset (Eupatorium perfoliatum): Native Wetland Perennial for Late-Season Pollinators

Boneset plant

Boneset flowers

Boneset habit

Boneset foliage

Overview

Boneset (Eupatorium perfoliatum), also called thoroughwort, feverwort, or agueweed, is a robust native perennial of eastern North American wetlands. It grows 3-5 feet tall with distinctive perfoliate leaves (stem appears to pierce the leaf pairs) and flat-topped clusters of fuzzy white flowers in late summer to fall. A magnet for butterflies, bees, and beneficial insects.

Botanical Details

  • Family: Asteraceae (daisy family)
  • Genus: Eupatorium
  • Species: perfoliatum
  • Synonym: Eupatorium perfoliatum var. perfoliatum

Culture & Uses

Plant in full sun to part shade in moist to wet soil. Ideal for rain gardens, pond edges, naturalized areas. Historically used by Native Americans and early settlers for fevers, colds, and flu (hence "boneset" for breakbone fever). Contains toxic pyrrolizidine alkaloids; internal use not recommended without expert guidance. Ornamental value in late-season borders.

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