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Is Tall Ironweed toxic to cats?

Vernonia altissima

Mildly toxic to cats

Mildly. The ASPCA lists tall ironweed as mildly toxic to cats — a chewing cat typically gets mouth irritation, drooling, and vomiting rather than a medical emergency, but it is still best kept out of reach. This classification follows the ASPCA Toxic and Non-Toxic Plant List. Vernonia altissima is not individually listed by the ASPCA; treat with caution and verify with a vet before assuming it is safe. Ironweed is generally considered unpalatable and is avoided by grazing livestock, but unlisted plants can still cause gastrointestinal upset, so prevent pets from chewing it.

What to do if your cat ate tall ironweed

  1. Remove any plant material from your cat's mouth and move tall ironweed out of reach.
  2. Note how much was eaten and when, and watch for drooling, vomiting, or lethargy.
  3. Do not induce vomiting unless a vet or poison-control specialist instructs you to.
  4. Call your vet or the ASPCA Animal Poison Control Center on (888) 426-4435 and follow their advice.
  5. Bring a leaf or photo of tall ironweed to the appointment so it can be treated correctly.

General guidance, not veterinary advice. If you think your cat has eaten tall ironweed, contact your vet or the ASPCA Animal Poison Control Center on (888) 426-4435 — do not wait for symptoms to worsen.

Is tall ironweed toxic to cats? — FAQ

Is tall ironweed toxic to cats?

Mildly. The ASPCA lists tall ironweed as mildly toxic to cats — a chewing cat typically gets mouth irritation, drooling, and vomiting rather than a medical emergency, but it is still best kept out of reach. Vernonia altissima is not individually listed by the ASPCA; treat with caution and verify with a vet before assuming it is safe. Ironweed is generally considered unpalatable and is avoided by grazing livestock, but unlisted plants can still cause gastrointestinal upset, so prevent pets from chewing it.

What are the symptoms if a cat eats tall ironweed?

Vernonia altissima is not individually listed by the ASPCA; treat with caution and verify with a vet before assuming it is safe. Ironweed is generally considered unpalatable and is avoided by grazing livestock, but unlisted plants can still cause gastrointestinal upset, so prevent pets from chewing it. Signs usually appear soon after chewing rather than hours later — watch for drooling, pawing at the mouth, vomiting, loss of appetite, or unusual lethargy after your cat has had access to tall ironweed.

What should I do if my cat ate tall ironweed?

Stay calm. Remove any plant from your cat's mouth and take the plant away. Note how much was eaten and when, and do not induce vomiting unless told to. Call your vet or the ASPCA Animal Poison Control Center on (888) 426-4435 and follow their advice; a leaf or photo helps the vet treat it correctly.

Is tall ironweed toxic to dogs too?

The ASPCA classification Growli uses applies to both cats and dogs: Tall Ironweed is mildly toxic to dogs as well. See the full tall ironweed pet-safety guide for both species.

What is a cat-safe alternative to tall ironweed?

For a similar look without the risk, see the best cats-safe plants list — every plant there is ASPCA non-toxic to cats and dogs.

Full tall ironweed pet-safety