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Photo: wackybadger, CC BY-SA 2.0 (via Wikimedia Commons)

Bigleaf Aster

Eurybia macrophylla

Also known as Large-leaved Aster, Big-leaved Aster, Large Leaf Aster

At a glance
Family
Asteraceae (aster family)
Type
Herbaceous woodland perennial
Parts used
Leaves and root (historically, in Indigenous tradition); leaves are the part most often gathered today
Size
1 to 3 feet tall in bloom, with broad basal leaves that spread into wide, low mats
Bloom
Late summer into fall, pale lavender to nearly white ray flowers on branching stems
Habitat
Dry to moist deciduous and mixed woodlands, forest edges, and clearings across eastern and northern North America
Acquisition
Grow or buy
This plant in HerbSense

Key benefits

Lush shady ground cover
Late-season pollinator forage
Deer-resistant woodland plant
Rooted in Indigenous tradition

Traditional uses

Bigleaf aster is, first and foremost, a plant of the northern forest floor, one of the most familiar sights in a Great Lakes or New England woodland by late summer, when its pale lavender flowers rise above broad, heart-shaped leaves. Among the Ojibwe and other Anishinaabe peoples, whose homelands overlap much of its range, the root was gathered and prepared for a variety of traditional purposes recorded by ethnobotanists, from calming remedies for children to smoking mixtures blended with other plants. Because so little of that knowledge was written down by the communities who held it, and because modern research on the plant is thin, it survives today mostly as a garden and foraging favorite rather than a working household remedy.

How to grow & use it

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Pairs well with
  • Woodland goldenrod
  • White snakeroot's showier, safer cousins in a shade bed
  • Wild ginger as a groundcover companion
Substitutes
  • Other native asters such as New England aster for garden and pollinator value
Choose it when

The aster that carpets the quiet places under old trees, opening its pale flowers just as the rest of the woods is settling in for sleep.

Did you know?

This plant used to be called Aster macrophyllus, but in 1994 botanists split most of the asters native to the Americas into a new genus, Eurybia, after DNA studies showed they were only distant cousins of the true asters of Europe and Asia. The bigleaf aster kept its species name, macrophyllus, which simply means "large leaved."

Safety

There is little modern research on this plant's safety when taken internally, so no ingestion use is recommended here. As an aster-family plant, its pollen and foliage may trigger reactions in people with ragweed sensitivities.