Hemp dogbane

Hemp dogbane, also known as dogbane, amy root, prairie dogbane, Indian hemp, rheumatism root, dogsbane, or wild cotton, is a perennial herbaceous plant that grows throughout much of North America —in the southern half of Canada and throughout the United States. It is poisonous to humans, dogs, cats, and horses. All parts of the plant contain toxic cardiac glycosides that can cause potentially fatal cardiac arrhythmias if ingested. Some Lepidoptera can withstand the toxins and feed on this plant.

Main Photo Credit: "Hemp dogbane (Apocynum cannabinum), New York, USA" by Collin Sugrue, 2026. CC BY-NC 2.0.

Description: Wikipedia