Is lily of the valley toxic to cats?
Also called: Convallaria, Convallaria majalis, lily-of-the-valley
Toxic
Contains heart toxins that can cause an irregular heartbeat.
Yes. Lily of the valley is not a true lily, but it contains heart toxins that can cause vomiting, an irregular heartbeat and serious poisoning in cats.
Signs to watch for
- Vomiting, an irregular heartbeat, low blood pressure, disorientation, coma and seizures.
Why it's dangerous
- It contains cardiac glycosides, which upset the stomach and affect the heart.
Where this comes from
ASPCA Animal Poison Control
Lily of the valley contain cardiac glycosides that causes stomach upset (vomiting, diarrhea) and an irregular heartbeat.
Read "Which Lilies Are Toxic to Pets?"
Checked 9 October 2026
VCA Animal Hospitals
Lily of the Valley contains heart toxins, resulting in cardiovascular changes.
Read "Household Hazards – Toxic Hazards for Cats"
Checked 9 October 2026
Where this comes from
ASPCA Animal Poison Control
Lily of the valley contain cardiac glycosides that causes stomach upset (vomiting, diarrhea) and an irregular heartbeat.
Read "Which Lilies Are Toxic to Pets?"
Checked 9 October 2026
ASPCA Animal Poison Control
Clinical Signs: Vomiting, irregular heart beat, low blood pressure, disorientation, coma, seizures
Read "Toxic and Non-toxic Plants: Lily of the Valley"
Checked 9 October 2026
VCA Animal Hospitals
Lily of the Valley contains heart toxins, resulting in cardiovascular changes.
Read "Household Hazards – Toxic Hazards for Cats"
Checked 9 October 2026
Where this comes from
ASPCA Animal Poison Control
Clinical Signs: Vomiting, irregular heart beat, low blood pressure, disorientation, coma, seizures
Read "Toxic and Non-toxic Plants: Lily of the Valley"
Checked 9 October 2026
Where this comes from
ASPCA Animal Poison Control
Lily of the valley contain cardiac glycosides that causes stomach upset (vomiting, diarrhea) and an irregular heartbeat.
Read "Which Lilies Are Toxic to Pets?"
Checked 9 October 2026