Barnaby's Thistle

Additional Common Names: Yellow Star Thistle
Scientific Name: Centaurea solstitialis
Family: Compositae
Toxicity: Toxic to Horses
Non-Toxicity: Non-Toxic to Dogs, Non-Toxic to Cats
Toxic Principles: Unknown
Clinical Signs: "Chewing disease" - can chew but unable to swallow, dehydration, malnutrition, death

Credit: Steve Dewey, Utah State University,

If your pet ingested this plant, contact your local veterinarian or the ASPCA Animal Poison Control Center at 888-426-4435.*

* A $65 consultation fee may apply.

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