The death of a groundskeeper for a large arboretum prompted an environmental toxicology lawsuit against the arboretum’s owners in Missouri. The groundskeeper, a sixty-year-old man, had tended to the arboretum’s outlying gardens and landscaping for many years, consistently applying numerous toxic pesticides containing glyphosate. He was asked to use products such as Roundup on a daily basis, but his employer never provided him with protective gear to limit his oral or respiratory exposure. After seeking medical attention a year ago with concerns about fevers, headaches, chills, myalgia, and prolonged sweating, he was diagnosed with blood cell deficiency and an upper respiratory infection; he passed away from brain cancer shortly thereafter. A medical perspective on the role pesticide exposure may have played in the cancer’s onset and groundskeeper’s subsequent death was solicited.