Tall Thoroughwort, Tall Boneset, Tall Joe-Pye Weed, Tall White-Top

(Eupatorium altissimum L.)

Asteraceae (Sunflower Family)

▲▼ mature plants

▲▼ flowering stems

o   Tall Joepyeweed, Tall Thoroughwort, Whitetop:  (Eupatorium altissimum)  (pp. 128-129, Weeds of the Great Plains—not  in Weeds of the Northeast)

 

§  grows taller (5-6 feet) than white snakeroot

 

§  has narrower, lanceolate leaves and flowers more in a flat-topped inflorescence at the top of the plant

 

§  also may be poisonous to livestock, if grazed (not usually grazed)