Also called Jopi weed.
[1]
Also punctuated Joe-Pye weed.
A group of 5 related flowering plants in
✽ aster / ✽ daisy / 🌻︎ sunflower family Asteraceae.
Before being given their own genus, these species were formerly part of sister
🦴 boneset / 🐍︎ snakeroot / thoroughwort genus Eupatorium.
Native to central and eastern North America.
🗺 Map by county (🇺🇸 USA-48)
(color key).
Uses by native peoples
(Ethnobotany database)
Eutrochium hosts caterpillars of 42 species
of butterflies and moths, in some areas,
Bloom dates, height, light, moisture, etc., and use in back yard patio (Pennsylvania). 
(pages 13, 19, 30, 48 and 51)
Bloom dates (Michigan). (page 4)
One of our authors hears that to reduce the adult and bloom height of the plant, during early growing season and before it blooms, cut the stems.
References
[1]
The common names Joe Pye weed and Jopi weed apparently are from a Mahican/Mohican healer or leader, Joseph Shauquethqueat, who apparently earned the name Jopi by healing people from the disease typhoid or typhus fever (different sources). The disease was called jopi or jopai in the local language.
—
"Joe Pye, Joe Pye's Law, and Joe-Pye-Weed:
The History and Eponymy of the Common Name
Joe-Pye-Weed for Eutrochium Species (Asteraceae)."
The Great Lakes Botanist. .
Accessed .