Ageratina altissima, also known as white snakeroot, [3] richweed, [3] or white sanicle, [4] is a poisonous perennial herb in the family Asteraceae, native to eastern and central North America.

2021年11月11日 · White Snakeroot Facts. White snakeroot plants have coarse toothed, round-based leaves with pointed tips that grow opposite each other on erect stems that reach 3 feet (1 m.) tall. The stems branch at the top where white clusters of …

White Snakeroot is a herbacrous perennial flower native to Eastern North America. Scientifically known as Ageratina altissima, it grows 1-3′ tall in partial shade and average moisture. Blooming white flowers in late Summer to Fall, it provides nectar to …

2024年10月3日 · White snakeroot (ageratina altissima) is a plant that can be found in the eastern United States, often in wooded areas. One state where white snakeroot is frequently found is Missouri, where it...

white snakeroot, (Ageratina altissima), poisonous North American herb of the aster family (Asteraceae). White snakeroot contains a toxic alcohol (tremetol), and cattle allowed to pasture on the plant may suffer muscular tremors (the “trembles”), weakness, constipation, and death.

2021年9月19日 · September blooming white snakeroot (ageratina altissima - previously eupatorium rugosum) is a pretty and easy to grow native plant to add to the yard in challenging partially shady areas for pollinators, biodiversity or erosion control.

White Snakeroot is easily grown in average, moist well-drained soils in full sun to partial shade. In the southeast, it will appreciate some afternoon shade. It will grow 2-5 feet tall and 2-4 feet wide.