§ Toxic plants · Asparagaceae · Checked Oct 2026
Is European lily of the valley toxic to cats and dogs?
Yes. European lily of the valley (Convallaria majalis) is toxic to cats and dogs, according to the ASPCA Animal Poison Control Center. Plant Smart rates its effects Severe, level 3 of 4.
Get a permanent discount if you join Early Access. iPhone and Android, in the contiguous U.S.
§ 010 · Signs
What to watch for
Signs include vomiting, irregular heartbeat, low blood pressure, disorientation, coma, seizures and diarrhea. Signs can start within hours; some take a day or more to show.
§ 020 · If it happened
What to do if your pet ate it
Call your vet or a pet poison hotline straight away, even if your pet seems fine: the ASPCA Animal Poison Control Center, (888) 426-4435, or Pet Poison Helpline, (855) 764-7661. Both are open 24 hours and charge a fee. Have the plant or a photo of it to hand, and don’t make your pet vomit unless a vet tells you to.
§ 030 · Same family
Other Asparagaceae plants toxic to pets
European lily of the valley belongs to the Asparagaceae family. ASPCA lists these relatives too.
§ 040 · Questions
Questions about European lily of the valley and pets
Is European lily of the valley toxic to cats?
Yes. ASPCA lists European lily of the valley as toxic to cats.
Is European lily of the valley toxic to dogs?
Yes. ASPCA lists European lily of the valley as toxic to dogs.
What happens if my pet eats European lily of the valley?
Signs include vomiting, irregular heartbeat, low blood pressure, disorientation, coma, seizures and diarrhea. Plant Smart rates it Severe, level 3 of 4.
What should I do if my pet ate it?
Call your vet or a pet poison hotline right away, even before signs appear: the ASPCA Animal Poison Control Center at (888) 426-4435, or Pet Poison Helpline at (855) 764-7661. Both charge a fee. Have the plant, or a photo of it, to hand.
What else is European lily of the valley called?
European lily of the valley is also sold or known as American lily-of-the-valley and asian lily-of-the-valley.