Larkspur Poisoning As We Now Know It and a Glimpse of the Future Authors John D. Olsen USDA-AR,S Poisonous Plant Research Laboratory, 1150 East 1400 North, Logan, Utah 84321 Keywords: Larkspur poisoning, Delphinium, Acute death Abstract Larkspur poisoning results from grazing Delphinium plants. Acute death is generally the presenting feature. Downloads PDF Published 1993-09-16 Issue 1993 Section Cow-Calf Sessions