Cats
Potentially toxicConsulted references classify the plant as toxic or irritating for that pet type.
Verified against ASPCA/provenance audit 2026-05-06 on May 6, 2026.
Sources
cat safety reference
Is Mountain Laurel safe for cats?
Kalmia latifolia
Mountain Laurel is a broadleaf evergreen shrub known for its clusters of showy, cup-shaped flowers. It contains grayanotoxins that are highly dangerous to pets if ingested.
Calico BushKalmia latifoliaLaurelSpoonwood
- Light
- Partial shade to full sun
- Habit
- Shrub
- Care
- Moderate
Safety status
What this means for your cat
Mountain Laurel is highly toxic to cats. Even a small amount of leaves or flowers can deliver enough grayanotoxin to disrupt the heart and nervous system, so any suspected ingestion should be treated as an emergency rather than watched at home.
What to watch for
Vomiting, excessive drooling, and diarrhea are usually the earliest signs. Watch closely for weakness, tremors, irregular heart rhythm, or collapse.
Time window
Onset and duration are not given as specific numbers in the cited sources; clinical guidance treats grayanotoxin poisoning as time-critical.
When to call the vet
Call immediately — don't wait for symptoms to worsen. Mountain Laurel has caused severe arrhythmias and death in pets.
Sources: ASPCA, Pet Poison Helpline (no first-aid guidance).
If a pet has chewed or swallowed plant material and is showing symptoms, contact a veterinarian or poison resource immediately. This product is for structured reference, not diagnosis.
Cats — concern notes
Common signs
Drooling, vomiting, diarrhea, loss of appetite, abdominal pain, tremors, and potential cardiac arrhythmias.
Escalation note
Ingestion is considered highly dangerous and potentially fatal. Please contact your veterinarian or an animal poison control center immediately if ingestion is suspected.
Safer alternatives
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Source evidence
ASPCA Toxic Plant List
toxicology · 99% reliability
Mountain Laurel contains grayanotoxins which can cause vomiting, diarrhea, and cardiovascular issues in pets.
NC State Extension Plant Toolbox
botanical · 94% reliability
Kalmia latifolia is a native evergreen shrub that is highly toxic to humans and animals if ingested.
Questions about Mountain Laurel
Is Mountain Laurel toxic to cats?
Yes, Mountain Laurel (Kalmia latifolia) is highly toxic to cats. It contains grayanotoxins that are considered highly dangerous and potentially fatal if ingested. Contact your veterinarian or an animal poison control center immediately if you suspect your cat has eaten any part of this plant.
What symptoms will a cat show after eating Mountain Laurel?
Early signs include drooling, vomiting, diarrhea, loss of appetite, and abdominal pain. As poisoning progresses, watch closely for weakness, tremors, irregular heart rhythm, or collapse — grayanotoxin poisoning can cause severe cardiac arrhythmias.
What should I do if my cat ate Mountain Laurel?
Call your veterinarian or the ASPCA Animal Poison Control Center at (888) 426-4435 immediately — do not wait for symptoms to appear or worsen. Mountain Laurel has caused severe arrhythmias and death in pets, and grayanotoxin poisoning is treated as time-critical.
What part of Mountain Laurel is poisonous to cats?
The grayanotoxins responsible for poisoning are present throughout the plant. No specific part has been identified as safer than another, so all contact with Mountain Laurel — leaves, flowers, stems — should be treated as a potential exposure risk.
Same cat verdict
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