Chenopodium ambrosioides

Chenopodium ambrosioides is toxic to cats, dogs and horses. The reported severity is critical. Also known as Mexican Tea and Wormseed.

dogs cats horses

Mild Moderate Severe Critical

This plant is known to be potentially deadly!

  • If you're comfortable with the risk, ensure this plant is out of reach of your animal.
  • If you suspect your animal has ingested portions of this plant, immediately consult your veterinarian.
  • If your animal is experiencing any of the associated symptoms, immediately contact your veterinarian's emergency number for further instructions.

If your animal ate this plant, call your veterinarian, the ASPCA Animal Poison Control on (888) 426-4435 or the Pet Poison Helpline on (855) 764-7661. Fees may apply.

Symptoms to watch for

Vomiting Diarrhea Respiratory Failure Difficulty Breathing Death

The color of each symptom follows the severity scale above.

About

Dysphania ambrosioides, formerly Chenopodium ambrosioides, known as epazote, Jesuit's tea, Mexican tea or wormseed, is an annual or short-lived perennial herb native to the Americas.

How this plant poisons

Humans have died from overdoses of D. ambrosioides essential oils (attributed to the ascaridole content). Symptoms include severe gastroenteritis with pain, vomiting, and diarrhea, dizziness, headache, temporary deafness, kidney and liver damage, convulsions, paralysis, death.

Common Names

  • Mexican Tea
  • Wormseed

Also recorded as American Goosefoot, American Wormseed, Amerrican Goosefoot, Jerusalem Tea, Jesuit's Tea and Mexican Grape Herb.

Facts

Family
Amaranthaceae
Duration
Annual
Growth habit
Forb/herb, Subshrub
In the wild
FR, US, NL, ES, PT, BR + more
Source
Wikipedia, CC BY-SA 4.0
Elsewhere

Countries with the most wild observations, from GBIF data.