Larkspur

poison-control

Toxic to Dogs, Toxic to Cats, Toxic to Horses

Source checked 2026-10-27

rescue-education

rabbit.org: listed as poisonous (not graded) · rabbit.org list "Poisonous Plants" (compiled by the University of Illinois): plants "normally thought to be poisonous"; "others may cause a reaction in some but not in others". Not a graded risk.

Larkspur

Source checked 2026-10-27

rescue-education

WHRS Class 1: universal toxin · Wisconsin House Rabbit Society chapter list (G. Flentke, 2012): Class 1 — "Universal species toxins": "usually systemic toxins or local effect toxins of sufficient intensity to cause systemic problems" (list heading: "Do NOT expose rabbits to these plants.").

Larkspur

Source checked 2026-10-27

peer-reviewed

Peer-reviewed lab experiment, extract (PMID 2017783) · Extract of tall larkspur (Delphinium barbeyi) dosed by subcutaneous injection or gavage in mice, hamsters, rats and sheep to measure LD50; this is a laboratory dosing model, not a report of pets eating the plant. Sheep were most susceptible to injection, followed by hamsters, mice and rats.

Peer-reviewed lab experiment, extract (PMID 2017783) · Extract of Delphinium barbeyi by injection or gavage; rats had the lowest susceptibility of the species tested. Laboratory dosing model, not plant ingestion by pets.

Peer-reviewed lab experiment, extract (PMID 2017783) · Extract of Delphinium barbeyi by injection or gavage; the authors judged mice the most suitable bioassay animal because of high susceptibility. Laboratory dosing model, not plant ingestion by pets.

Similarity of primary clinical signs of poisoning and lack of significant difference in slope of the dose-response curves implied that the overall effect of the larkspur alkaloids was the same for all rodent species tested.

Source checked 2026-10-27

specialist-charity

Tortoise Trust: listed as toxic, degree uncertain · Tortoise Trust toxic-plant list (from Highfield 2001): "Some plants on this list may be safely consumed in small or moderate quantities, but may be fatally toxic under certain circumstances or in large doses"; exact degree of toxicity unknown.

Larkspur

Source checked 2026-10-27

university

Cornell: genus-level listing · all · Cornell lists Delphinium spp.; parts poisonous: all; poison: alkaloids delphinine, ajacine, and others. Cornell's entry is for the whole genus (Delphinium spp.); it does not name Delphinium species specifically, so this is shown as caution.

Delphinium spp. | Delphiniums, Larkspurs | cattle, humans, goats | all | alkaloids delphinine, ajacine, and others

Source checked 2026-10-27

No evidence collected in this database yet for: Guinea pigs, Chinchillas, Ferrets, Pet birds (general), Parrots (macaws, Amazons, African greys…), Budgerigars (budgies), Cockatiels, Lovebirds, Canaries, Finches, Pigeons & doves, Bearded dragons, Iguanas, Chickens & other poultry

No supported claim has been collected for these animals. Not listed does not mean safe; do not infer suitability from another species.