The weeds commonly called redroot or iron-weed are very good for this.
"Games for the Playground, Home, School and Gymnasium" by Jessie H. Bancroft
Old lady Field she make medicine with snakeroot and larkspur and marshroot and redroot.
"Slave Narratives: a Folk History of Slavery in the United States From Interviews with Former Slaves" by Work Projects Administration
It does indeed look like a kind of forethought in the redroot.
"A Year in the Fields" by John Burroughs