Is Rhododendron Toxic to Cats?
Also known as: Azalea, Mountain Rose, Rhododendron spp. · Rhododendron spp.
What makes it toxic
Grayanotoxins, found in leaves, flowers, nectar and even honey made from the nectar. They bind sodium channels in nerve and heart muscle cells, keeping them overstimulated and disturbing normal heart rhythm.
Warning signs to watch for
Drooling and vomiting within a few hours of chewing leaves or flowers, followed by diarrhea, weakness, loss of coordination, a slow or irregular heartbeat, tremors and, in larger doses, seizures and collapse.
What to do if your cat eats it
Remove any plant material from the mouth and call your vet promptly, even if the cat seems fine. If the cat is wobbling, trembling or breathing oddly, go straight to an emergency animal hospital.
Common questions
Are azaleas rhododendrons?
Yes. Azaleas are members of the same genus, so every azalea variety carries the same grayanotoxins and should be treated identically.
Is a small nibble of rhododendron leaf dangerous?
Even small amounts can sicken a cat, because cats are small and the toxins act quickly. Mild cases involve drooling and vomiting; serious cases need emergency care.
Can a cat die from rhododendron poisoning?
Deaths are uncommon but documented in severe ingestions, mainly from heart rhythm disturbances and collapse. Fast veterinary treatment dramatically improves the outcome.
More plants checked for cats
This page is general educational information, not a substitute for professional veterinary advice. Every pet is different — if your animal ate something concerning, contact your veterinarian or a pet poison hotline right away. Checking what your pet can eat? Visit our sister site SafeOrToxic.