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Is Mountain Laurel Toxic to Cats?

☠️ ToxicSeverity: Severe
✅ Cross-checked against veterinary poison-control guidance · Oct 2026 audit
⚠️ Educational info only. If your pet just chewed something and looks unwell, skip the reading and call your vet or Pet Poison Helpline (US): (855) 764-7661.
Yes, mountain laurel is severely toxic to cats. Like azalea, it contains grayanotoxins that disrupt the heart and nervous system.

Also known as: Spoonwood, Calico Bush · Kalmia latifolia

What makes it toxic

Grayanotoxins in leaves, flowers, nectar and twigs. They bind sodium channels, causing dangerous drops in blood pressure and heart rhythm disturbances.

Warning signs to watch for

Drooling, vomiting, diarrhea, weakness and trembling within hours, progressing to low blood pressure, abnormal heartbeat, seizures and possible coma.

What to do if your cat eats it

This is an emergency. Go to an emergency veterinary clinic immediately with a leaf sample; early treatment with supportive cardiac care saves lives.

Common questions

Is mountain laurel as dangerous as azalea?

Yes. Both are ericaceous shrubs with grayanotoxins, and mountain laurel is considered every bit as hazardous.

Can a cat be poisoned by honey from mountain laurel flowers?

Grayanotoxin-contaminated honey sickens humans, and the same logic applies to pets. Keep all products of these flowers away from animals.

More plants checked for cats

Pothos☠️ ToxicYes, pothos is toxic to cats. Chewing the leaves or vines releases sharp calcium oxalate crystalAloe Vera⚠️ Mildly ToxicAloe vera is mildly to moderately toxic to cats. The gel is famously soothing for human skin, buSpider Plant✅ Non-ToxicNo, spider plants are non-toxic to cats. They are one of the best houseplants for homes with curEaster Lily☠️ ToxicYes — and this is one of the most dangerous plants a cat can meet. Every part of an Easter lily,Sago Palm☠️ ToxicYes — sago palm is severely toxic to cats and among the deadliest houseplants. Every part contaiBoston Fern✅ Non-ToxicNo, Boston ferns are non-toxic to cats — a classic choice for plant-loving cat households.

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.