Asclepias spp.

Asclepias spp. is toxic to cats, dogs and horses. The reported severity is critical. Also known as Milkweeds, Common Milkweed and Butterfly Milkweed.

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 now, or one of these services.

What do I do right now?
  • Australia
    Animal Poisons Helpline 1300 869 738 24 hours, every day · From $75
  • Austria
    Vergiftungsinformationszentrale 01 406 43 43 24 hours, every day
  • Belgium
    Centre Antipoisons 070 245 245 08:00 to 22:00 on weekdays, 10:00 to 22:00 at weekends · Human calls come first. The centre has no funding for animal work.
  • Canada
    Pet Poison Helpline (855) 764-7661 24 hours, every day · $89 for each incident
  • France
    Centre National d'Informations Toxicologiques Vétérinaires 04 78 87 10 40 08:30 to midnight, every day
  • Germany
    Giftinformationszentrum Bonn 0228 19240 24 hours, every day · Germany has no dedicated animal service. Human calls come first, so an animal call can wait.
  • Ireland

    Ireland has no animal poison service for owners. Call your veterinarian. An Irish veterinarian can consult the Veterinary Poisons Information Service in the United Kingdom.

  • Italy
    Centro Antiveleni di Milano 02 6610 1029 24 hours, every day
  • Netherlands
    Nationaal Vergiftigingen Informatie Centrum 088 755 8000 Veterinarians only 24 hours, every day · Call your veterinarian. Your veterinarian calls this line.
  • New Zealand
    Animal Poisons Helpline 0800 869 738 24 hours, every day
  • Sweden

    Giftinformationscentralen stopped answering questions about animals on 1 July 2018. Call your veterinarian or an animal hospital.

  • Switzerland
    Tox Info Suisse 145 24 hours, every day · From outside Switzerland, call +41 44 251 51 51.
  • United Kingdom
    Animal PoisonLine 01202 509 000 24 hours, every day · £35 from 08:00 to 20:00 Monday to Friday, £45 at other times
    Veterinary Poisons Information Service 020 7305 5055 Veterinarians only 24 hours, every day · A members only service. Your veterinarian calls this line.
  • United States
    ASPCA Animal Poison Control Center (888) 426-4435 24 hours, every day · A consultation fee applies
    Pet Poison Helpline (855) 764-7661 24 hours, every day · $89 for each incident

Symptoms to watch for

Vomiting Depression Weakness Loss Of Appetite Diarrhea Seizures Difficulty Breathing Weak Pulse Dilated Pupils Kidney Failure Liver Failure Coma Respiratory Paralysis Death Abdominal Pain Colic Bloat Tremors Incoordination Respiratory Failure Cardiac Arrhythmias Recumbency

The color of each symptom follows the severity scale above.

About

Asclepias is a genus of herbaceous, perennial, flowering plants known as milkweeds, named for their latex, a milky substance containing cardiac glycosides termed cardenolides, exuded where cells are damaged. Most species are toxic to humans and many other species, primarily due to the presence of cardenolides. However, as with many such plants, some species feed upon milkweed leaves or the nectar from their flowers. A noteworthy feeder on milkweeds is the monarch butterfly, which uses and requires certain milkweeds as host plants for its larvae.

Common Names

  • Milkweeds
  • Common Milkweed
  • Butterfly Milkweed
  • Swamp Milkweed
  • Tropical Milkweed
  • Antelopehorn Milkweed
  • Green Antelopehorns
  • Showy Milkweed
  • Narrowleaf Milkweed
  • Zizotes Milkweed
  • Whorled Milkweed
  • Green Comet Milkweed
  • Poke Milkweed
  • Woollypod Milkweed
  • Antelopehorns
  • Broadleaf Milkweed
  • Redring Milkweed
  • Rush Milkweed
  • Clasping Milkweed
  • Aquatic Milkweed
  • Four-Leaved Milkweed
  • Purple Milkweed
  • Sandhill Milkweed
  • Heart-Leaf Milkweed
  • Pineneedle Milkweed
  • Horsetail Milkweed
  • Fewflower Milkweed

Also recorded as Milkweed and butterfly plants.

Facts

Family
Asclepiadaceae
Duration
Perennial
Growth habit
Forb/herb, Shrub, Subshrub
In the wild
US, CA, MX, BR, ZA, UA + more
Source
Wikipedia, CC BY-SA 4.0

Countries with the most wild observations, from GBIF data.