Is Lily of the Valley Toxic to Dogs and Cats?

Cats · ToxicDogs · Toxic

Yes. Lily of the valley is highly toxic to both dogs and cats and can affect the heart.

Botanical name: Convallaria majalis

If your pet has eaten a toxic plant, contact your veterinarian or an emergency animal hospital right away and bring a photo or piece of the plant. In the US you can also call the ASPCA Animal Poison Control Center at (888) 426-4435 or the Pet Poison Helpline at (855) 764-7661 (fees may apply).

Why

Despite the name, lily of the valley is not a true lily. It contains cardiac glycosides, which can cause a dangerously slow or irregular heartbeat.

All parts of the plant are toxic, including the small white flowers and the red berries. Water from a vase holding these flowers can also be harmful.

How to recognize it

A low plant with two or three broad oval leaves and a stem of small, fragrant, white bell-shaped flowers hanging in a row, later followed by red berries. It is common in shady gardens and wedding bouquets.

Signs to watch for

  • Vomiting and diarrhea
  • Slow or irregular heartbeat
  • Weakness, disorientation or collapse
  • Seizures in severe cases

What to do

  • Contact a veterinarian immediately; heart effects need monitoring.
  • Keep bouquets containing lily of the valley out of reach and empty vase water safely.
  • Remove the plant from areas of the garden your pets use.

Pet-safe alternatives

Looking for something similar without the risk? These plants are listed as non-toxic to cats and dogs.

Related plants

← All plants

Sources

  • ASPCA Animal Poison Control Center. Toxic and Non-Toxic Plant List (dogs, cats).
  • Merck Veterinary Manual. Toxicology section.