Lily-of-the-valley is a poisonous plant. The main toxin in lily-of-the-valley is a group of cardenolides, while the steroidal saponins found in the plants can cause cardiac problems in pets. Because of this, veterinarians discourage the use of lily-of-the-valley for making herbal medications for pets.
What is Lily-of-the-valley?
Lily-of-the-valley (Lilium candidum) is a bulbous perennial herb that is common throughout Europe and Eurasia. The plant has a basal rosette of long narrow leaves and small pealike umbels at the top. It has scented, trumpet-shaped lilylike flowers that can be red, white, or lavender in color.