Eutrochium purpureum
（重定向自Eupatorium purpureum）
![](/Images/godic/202501/12/Eupatorium_purpureum22330.jpg")
![Flowers and leaves of Eutrochium purpureum](/Images/godic/202501/12/Wasserdost,_Wasserhanf,_Kunigundenkraut_Blüte,_lat-_Eupatorium_Purpureum2330.jpg")
Eutrochium purpureum kidney-root, sweetscented joe-pie weed, sweet Joe-Pye weed, gravel root, or trumpet weed is a herbaceous perennial plant in the sunflower family. It is native to eastern and central North America, from Ontario east to New Hampshire and south as far as Florida, Louisiana, and Oklahoma.