Ageratina altissima var. roanensis
Ageratina altissima (L.) King & H. Rob. var. roanensis (Small) Clewell & Woot.
Appalachian White Snakeroot, Appalachian Tall Boneset
Asteraceae (Aster Family)
Synonym(s): Eupatorium roanense, Eupatorium rugosum var. roanense, Eupatorium urticifolium
USDA Symbol: AGALR
From the Image Gallery
Plant CharacteristicsDuration: Perennial
Habit: Herb , Subshrub , Shrub
Size Notes: About 2-1/2 feet in height. Individual plants can reach 6 feet in height.
Size Class: 1-3 ft. , 3-6 ft.
Bloom InformationBloom Color: White
Bloom Time: Jul , Aug , Sep , Oct
BenefitWarning: Ageratina altissima contains the toxin tremetol. It is poisonous to livestock and to humans. Humans may be poisoned by consuming meat or milk from poisoned animals and many early European-Americans died in this way. This malady is commonly referred to as Milk Sickness.
Conspicuous Flowers: yes
Nectar Source: yes
Additional resourcesUSDA: Find Ageratina altissima var. roanensis in USDA Plants
FNA: Find Ageratina altissima var. roanensis in the Flora of North America (if available)
Google: Search Google for Ageratina altissima var. roanensis
MetadataRecord Modified: 2014-09-10
Research By: JAM