White Snakeroot
Ageratina altissima (Spreng.) King & H.E. Robins.
(formerly Eupatorium rugosum Houtt.)
Asteraceae (Aster Family)
▲▼ mature flowering plants
▲▼ flowering plants
▲▼flowers
▲▼flowers
Ageratina altissima
(Spreng.) King & H.E. Robins. (formerly
Eupatorium
rugosum Houtt.), White Snakeroot:
(Bayer
Code:
EUPRU; US Code AGAL5)
·
Native simple to creeping perennial, growing 1-4 feet tall that can spread
by short rhizomes
·
Has oval-shaped opposite, dark green to light green, triangular to
oval-shaped leaves with toothed edges; petioles present; veins not real
prominent
·
Flowers white, in head-like structures about ¼ diameter, in small,
flat-topped clusters at tips of top branches
·
Contains toxins that can be toxic to grazing livestock; toxins can pass into
milk, and are toxic to humans, as well
·
Prefers field edges or open woodland pastures (part shade)