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, 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 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
Elsewhere

Countries with the most wild observations, from GBIF data.