Is Rhododendron Toxic to Cats?

Yes — Rhododendron is severely toxic to cats

Rhododendrons contain grayanotoxins in all parts of the plant, including nectar and honey made from their flowers. They are closely related to azaleas and equally dangerous to pets.

Symptoms in Cats

If your cat eats Rhododendron, watch for these symptoms (onset: 1 to 6 hours):

Vomiting
Diarrhea
Weakness
Cardiac failure
Coma
Death

What To Do

Veterinary emergency. Even small amounts can cause cardiac symptoms. Immediate vet care is critical.

This is a veterinary emergency for cats. Call your vet or ASPCA Poison Control (888) 426-4435 immediately.

Cat-Safe Alternatives to Rhododendron

✓ Camellia ✓ Rose

Quick Facts

Scientific Name

Rhododendron spp.

Also Toxic to Dogs?

Yes (severe)

Toxic Compound

Grayanotoxins

Toxic Parts

all parts, leaves, flowers, nectar

Sources: ASPCA Animal Poison Control Center, Pet Poison Helpline. View full Rhododendron toxicity profile.