Stiff Cowbane
Oxypolis rigidior
Also known as: Pig Potato
Tall white-flowered umbel of wet meadows. Resembles cultivated parsley relatives but TOXIC like its cousin water hemlock — never confuse with edible carrots. Important late-season pollinator nectar.
- Family
- Apiaceae
- Type
- wildflower
- Lifespan
- perennial
- Height
- 3–5 ft
- Spacing
- 1–2 ft apart
- Light
- part shade
- Soil moisture
- wet
- Soil pH
- acidic, neutral
- Bloom
- July, August, September
- Bloom colors
- white, pink
- Wildlife value
- pollinators
- Landscape uses
- border, rain garden
- Native states
- AL, AR, DC, DE, FL, GA, IA, IL, IN, KY, LA, MD, MI, MN, MO, MS, NC, NJ, NY, OH, OK, PA, SC, TN, TX, VA, WI, WV