White Snakeroot
Ageratina altissima
White snakeroot lights up the autumn shade with frothy white flower clusters, one of the best late-season nectar plants for woodland gardens. Note: foliage is toxic to livestock (the historic cause of milk sickness).
- Family
- Asteraceae
- Type
- wildflower
- Lifespan
- perennial
- Height
- 2–4 ft
- Spacing
- 1–2 ft apart
- Light
- part shade, shade
- Soil moisture
- moist, dry
- Soil pH
- neutral, acidic
- Bloom
- August, September, October
- Bloom colors
- white
- Wildlife value
- pollinators, butterflies, songbirds
- Landscape uses
- border
- Native states
- AL, AR, CT, DC, DE, FL, GA, IA, IL, IN, KS, KY, LA, MA, MD, ME, MI, MN, MO, MS, NC, NE, NH, NJ, NY, OH, OK, PA, RI, SC, SD, TN, TX, VA, VT, WI, WV