Pet Care

St. John’s Wort

Additional Common Names:: Klamath Weed
Scientific Name:: Hypericum perforatum

Family:: Clusiaceae
Where Found:: More than 25 different species known to exist in North America; found on roadsides, in overgrazed or eroded pastures, abondoned fields, open woods or sandy/infertile soils.
Toxicity:: Toxic to Horses, Toxic to Cats, Toxic to Dogs
Toxic Principles:: Hypericin
Clinical Signs:: Photosensitization (ulcerative and exudative dermatitis).

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.