Black locust Toxic?

All parts of black locust are toxic, with highest toxin concentrations in bark and seeds
Horses are 10 times more sensitive to its toxins than ruminant species like cattle
Ingestion can lead to life-threatening neurological, cardiac and kidney damage
FAQ
Is Black locust toxic to Humans?
No specific human toxicity data is available. Ingestion may cause gastrointestinal distress, neurological symptoms and organ damage in severe cases. (Moderate)
Is Black locust toxic to Cats?
No specific feline toxicity data reported. Monitor closely and contact a veterinarian immediately if ingestion is suspected. (Low)
Is Black locust toxic to Dogs?
No specific canine toxicity data reported. Monitor closely and contact a veterinarian immediately if ingestion is suspected. (Low)
Is Black locust toxic to Horses?
Colic, reduced intestinal motility, lack of fecal output, pelvic flexure constipation, CNS symptoms (excitation, dilated pupils, blindness, balance disorders, recumbency), heart failure, kidney failure, laminitis (High)
Toxicity Details
No specific human toxicity data is available. Ingestion may cause gastrointestinal distress, neurological symptoms and organ damage in severe cases.
No specific feline toxicity data reported. Monitor closely and contact a veterinarian immediately if ingestion is suspected.
No specific canine toxicity data reported. Monitor closely and contact a veterinarian immediately if ingestion is suspected.
Colic, reduced intestinal motility, lack of fecal output, pelvic flexure constipation, CNS symptoms (excitation, dilated pupils, blindness, balance disorders, recumbency), heart failure, kidney failure, laminitis
Toxicity Snapshot
First Aid & Prevention
First 30 Minutes
- • Prevent further ingestion by removing any remaining plant material from the affected individual's reach
- • Contact a medical or veterinary professional immediately for guidance
- • Administer activated charcoal only if explicitly directed by a qualified professional
Contact Vet Immediately
- • Ingestion of any part of black locust is confirmed or suspected
- • Symptoms like colic, dilated pupils, balance loss, or difficulty breathing appear
- • The affected animal is a horse, as they are highly sensitive to this plant's toxins
Prevention
- • Never tie horses near black locust trees
- • Avoid using black locust wood shavings as animal bedding
- • Keep the plant out of access to pets and livestock
- • Learn to distinguish black locust from non-toxic Acacia species
Treatment & Prognosis
- • Perform appropriate decontamination procedures as clinically indicated
- • Provide targeted symptomatic and supportive care tailored to presented symptoms
- • Closely monitor cardiac, renal, and neurological function during recovery
Professional Toxicology
• Toxalbumin and glycoside compounds disrupt cellular function, damage organ tissue, and impair nervous, cardiac and renal system function
Information from CliniTox veterinary text.
The following plants look similar and may be confused:
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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.