White snakeroot (Eupatorium rugosum).
It is a poisonous perennial herb in the family Asteraceae, native to eastern North America. American Indians used a tea made from the roots to help diarrhea, painful urination, fevers, and kidney stones. The flowers of white snakeroot are a clean white color and after blooming small seeds with fluffy white tails are released to blow in the wind. A good butterfly nectar source.
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