Eupatorium perfoliatum (Common Boneset)
|Also known as:|
|Habitat:||sun; moist fields, along shores|
|Bloom season:||July - October|
|Plant height:||2 to 4 feet|
|Wetland Indicator Status:||GP: FACW MW: OBL NCNE: FACW|
|MN county distribution (click map to enlarge):|
|National distribution (click map to enlarge):|
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Flat-topped branching clusters of stalked flowers at the top of the stem and arising from upper leaf axils, a cluster comprised of numerous small clusters of up to 15 disk flowers each. Flowers are about ¼ inch across, dull white, star-shaped with 5 triangular petal-like lobes. In the center is a brown column of stamens; emerging from the center of the colum is a 2-parted style that is white, flattened, long and string-like. The bracts around the base of a flower are in 1 or 2 layers, oblong, hairy and gland-dotted, light green but whitish at the pointed tip.
Leaves and stem:
Opposing leaves join around the stem so it appears the stem grows through one large leaf, occasionally leaves are whorled in 3s. Leaves are wrinkly, 4 to 8 inches long, up to 2 inches wide, tapering to a point at the tip, with small rounded teeth along the edges. Both surfaces are hairy and the underside is gland-dotted. Stems are erect, branched in the upper plant, and densely covered in long, spreading hairs.
Fruit is a dry, black seed with a small tuft of hair to carry it off in the wind.
The leaf attachment makes Common Boneset easy to distinguish from other species with similar flowers.
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Where to buy native seed and plants ↓
- Common Boneset plant
- Common Boneset with Joe-pye weed and Grass-leaved Goldenrod
- garden-grown Common Boneset
- leaves whorled in 3s
Photos by K. Chayka taken at Battle Creek Regional Park, Ramsey County. Photos courtesy Peter M. Dziuk taken in Anoka County and in a private garden in Lino Lakes.
Have you seen this plant in Minnesota, or have any other comments about it?