Hollow Joe-Pye Weed (Eupatorium fistulosum)
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- Spotted Joe-Pye Weed
Stem of hollow Joe-Pye weed is glaucous (has a white bloom) and is green or purple-tinged, but not spotted. Spotted Joe-Pye weed is somewhat brighter in color, and the top flower cluster is less domed.
- Sweet Joe-Pye Weed
Stem of hollow Joe-Pye weed is tinged with purple, while that is sweet is green with black or purple at the joints, with a white bloom. Hollow JPW has leaves usually in whorls of 6, with sweet JPW usually has whorls of 3 or 4.
- Upland Boneset
Upland boneset has leaves in pairs, while joe-pye weeds have whorls of four or more.