Able to take down a cow, Poison hemlock is surprisingly widespread. In Athens, a long time ago, it was used to execute prisoners, most notably Socrates, who was found guilty of corrupting the youth and not believing in the same gods as his government. In more recent times the plant was associated with witchcraft, and as medical treatments to medical conditions such as rabies and asthma. Additionally, there were some accounts that the native americans used the lethal plant for poisonous arrows. Today, however, it is commonly ingested because it resembles edible plants, some including parsley, fennel and parsnip.
: Stewart, Jennifer. "Livestock Producers Should Watch For, Control Poison Hemlock." Purdue University. April 11, 2013. Accessed June 27, 2016. https://www.purdue.edu/newsroom/releases/2013/Q2/livestock-producers-should-watch-for,-control-poison-hemlock.html.
: "Poison Hemlock." HorseDVM. Accessed June 27, 2016. http://www.horsedvm.com/poisonous/poison-hemlock/.
: "The Suicide of Socrates, 399 BC." Eyewitness to History. Accessed June 27, 2016. http://www.eyewitnesstohistory.com/socrates.htm.
: Rowan. "Hemlock - Britains Most Common Witchy Plant." White Dragon. 2000. Accessed June 27, 2016. http://www.whitedragon.org.uk/articles/hemlock.htm.
: Moser, L., and D. Crisp. "Poison Hemlock." Southwest Biological Science Center. Accessed June 27, 2016. http://sbsc.wr.usgs.gov/research/projects/swepic/factsheets/coma2sf_info.pdf.
: "10 People Treated for Eating Poison-Hemlock in WA | Food Safety News." Food Safety News. May 14, 2015. Accessed June 27, 2016. http://www.foodsafetynews.com/2015/05/10-people-treated-for-eating-poison-hemlock-in-washington/#.V3EwkuYrKRs.