Good for brightening up shady spots in the early fall; Eupatorium rugosom has flat-topped clusters of white flower heads. Plant tolerates a wide range of conditions and will self-sow.
White Snakeroot is responsible for milk sickness, which occurs when people ingest milk, other dairy products, or meat from cattle that have eaten the plant. The plant contains the toxin trematol and ingesting it can cause severe abdominal pain and sickness. While extremely rare today, milk sickness was quite common and problematic in the early 19th century before settlers became familiar with the plant and its properties.
For more information on this plant, visit the USDA PLANTS Database: http://plants.usda.gov/java/profile?symbol=AGALA