Field Horsetail

Additional Common Names: Scouring rush, Common horsetail, Western horsetail
Scientific Name: Equisetum arvense
Family: Equisetaceae
Toxicity: Toxic to Horses
Toxic Principles: Thiaminase
Clinical Signs: Thiamine deficiency: weakness, weight loss, staggers, tremors, death

If you suspect your pet may have ingested a potentially toxic substance, call the APCC at (888) 426-4435 or contact your local veterinarian as soon as possible.*

* A $65 consultation fee may apply.

Browse Toxic Plant Gallery List »