Are azaleas toxic to cats?
Also called: azaleas, rhododendrons, Rosebay, Rhododendron
Toxic
Contains grayanotoxins, which can cause vomiting, weakness and heart failure.
Yes. Azaleas and rhododendrons are toxic to cats. They contain grayanotoxins, which can cause vomiting, diarrhoea, weakness and heart failure.
Signs to watch for
- Vomiting, diarrhoea, weakness and heart failure.
Where this comes from
ASPCA Animal Poison Control
Toxicity: Toxic to Dogs, Toxic to Cats, Toxic to Horses
Read "Toxic and Non-toxic Plants: Azalea"
Checked 9 October 2026
Pet Poison Helpline
Azaleas contain toxins called grayanotoxins.
Read "Top 11 Poisonous Plants"
Checked 9 October 2026
Where this comes from
ASPCA Animal Poison Control
Toxicity: Toxic to Dogs, Toxic to Cats, Toxic to Horses
Clinical Signs: Vomiting (not in horses), diarrhea, weakness, cardiac failure
Additional Common Names: Rosebay, Rhododendron
Read "Toxic and Non-toxic Plants: Azalea"
Checked 9 October 2026
Pet Poison Helpline
Azaleas contain toxins called grayanotoxins.
Read "Top 11 Poisonous Plants"
Checked 9 October 2026
Where this comes from
International Cat Care
If you’re concerned your cat has come into contact with any of the substances listed, contact your veterinary team immediately
Checked 9 October 2026
Where this comes from
ASPCA Animal Poison Control
Clinical Signs: Vomiting (not in horses), diarrhea, weakness, cardiac failure
Read "Toxic and Non-toxic Plants: Azalea"
Checked 9 October 2026