PlantFunForking larkspur Toxic?
All plant parts are toxic, with seeds containing the highest concentration of harmful alkaloids
Cattle and horses are far more sensitive to its toxins than sheep, with ingestion potentially leading to fatal respiratory paralysis
Methyllycaconitine, a key toxin in the plant, has a specific antidote (neostigmine) available for treatment
FAQ
Is Forking larkspur toxic to Humans?
No specific human symptom data is reported, but ingestion may cause nausea, muscle weakness, neurological impairment and respiratory distress consistent with diterpenoid alkaloid toxicity (High)
Is Forking larkspur toxic to Cats?
No specific feline toxicity data is available; ingestion may trigger salivation, gastrointestinal distress, weakness and neurological signs (Moderate)
Is Forking larkspur toxic to Dogs?
No specific canine toxicity data is available; ingestion may cause vomiting, muscle tremors, paralysis and respiratory distress in severe cases (Moderate)
Is Forking larkspur toxic to Horses?
Horses are highly sensitive, exhibiting restlessness, overexcitability, stiff gait, muscle weakness, recumbency, colic, muscle twitching, and potential death from respiratory paralysis (Severe)
Toxicity Details
No specific human symptom data is reported, but ingestion may cause nausea, muscle weakness, neurological impairment and respiratory distress consistent with diterpenoid alkaloid toxicity
No specific feline toxicity data is available; ingestion may trigger salivation, gastrointestinal distress, weakness and neurological signs
No specific canine toxicity data is available; ingestion may cause vomiting, muscle tremors, paralysis and respiratory distress in severe cases
Horses are highly sensitive, exhibiting restlessness, overexcitability, stiff gait, muscle weakness, recumbency, colic, muscle twitching, and potential death from respiratory paralysis
Toxicity Snapshot
First Aid & Prevention
First 30 Minutes
- • Induce vomiting only if ingestion occurred within the past 2 hours and the affected individual is conscious with no seizure activity
- • Administer activated charcoal to reduce gastrointestinal absorption of toxins
- • Keep the affected individual calm and restrict all unnecessary movement to reduce stress on respiratory function
Contact Vet Immediately
- • If any ingestion of the plant is confirmed or suspected
- • If neurological signs (muscle twitching, stiff gait, weakness, paralysis) develop
- • If vomiting, salivation, colic or respiratory distress appear after exposure
Prevention
- • Avoid planting forking larkspur in pastures, grazing areas or spaces accessible to pets and livestock
- • Remove wild forking larkspur growth from grazing areas before seed maturation to reduce exposure risk
- • Educate farm staff, pet owners and foragers to recognize the plant to prevent accidental ingestion
Treatment & Prognosis
- • Perform decontamination via gastric lavage and activated charcoal administration as clinically indicated
- • Administer neostigmine as a targeted antidote for methyllycaconitine toxicity
- • Provide symptomatic supportive care including respiratory support if needed, and ensure full rest during recovery
Professional Toxicology
• Polycyclic diterpenoid alkaloids disrupt neuromuscular signal transmission in the nervous system, leading to progressive paralysis
• Alkaloid concentration is highest in young plants and seeds, and decreases as the plant reaches full maturity
Information from CliniTox veterinary text.
The following plants look similar and may be confused:
Related Toxic Plants
Download PlantFun App
Identify, grow and care for plants effectively!
Instant Plant ID
Take a photo to quickly identify plants.
Smart Care Reminders
Generate watering and care schedules.
Toxicity & Disease Diagnosis
Identify toxic plants and pests with treatment advice.
Data Sources
This information is for reference only and does not constitute medical advice. If ingestion or poisoning is suspected, seek medical or veterinary attention immediately.