is larkspur poisonous
All members of the Delphinium genus are toxic to humans and livestock. The common name larkspur is shared between perennial Delphinium species and annual species of the genus Consolida.arkspur, especially tall larkspur, is a significant cause of cattle poisoning on rangelands in the western United States. Larkspur is more common in high-elevation areas, and many ranchers delay moving cattle onto such ranges until late summer when the toxicity of the plants is reduced.