Delphinium, Lark spur
Toxicity to pets
Larkspur or Delphinium is a beautiful flowering plant. All plants in the Ranunculaceae family contain diterpene alkaloids. These alkaloids have a neuromuscular blocking effect by inhibiting acetylcholine (neurotransmitter in nervous systems) causing weakness, drooling, abnormal heart rhythms, constipation, abdominal pain, paralysis, tremors and seizures when ingested. When large toxic ingestions, heart and lung failure can be seen, along with death.
The content of this page is not veterinary advice. A number of factors (amount of substance ingested, size of the animal, allergies, etc.) determine what is toxic to a particular pet. If you think your pet has eaten something potentially toxic, call Pet Poison Helpline or seek immediate veterinary treatment.