Are Tiger Lilies Poisonous to Humans? A Comprehensive Guide

Last updated: April 12, 2026

Tiger lilies are a popular addition to gardens and floral arrangements, known for their vibrant orange color and distinctive spots. However, many people wonder if these beautiful flowers are poisonous to humans. While tiger lilies are not toxic to humans, they can be dangerous for cats and other animals.

Tiger lilies contain a toxin called colchicine, which can cause severe gastrointestinal distress if ingested. Ingesting even small amounts of the plant can cause symptoms such as vomiting, diarrhea, and abdominal pain. However, these symptoms are typically mild and are not life-threatening to humans.

Despite the fact that tiger lilies are not poisonous to humans, it is still important to handle them with care. The sap from the plant can cause skin irritation and allergic reactions in some people. It is also important to keep the flowers away from pets, as ingestion of even a small amount of the plant can be fatal for cats and other animals.

Understanding Tiger Lily Toxicity

Tiger lilies are a beautiful addition to any garden or bouquet, but it is important to understand their toxicity to both humans and animals. This section will cover the toxic parts of the tiger lily, the effects of ingestion, and how tiger lilies compare to other types of lilies.

Toxic Parts of the Tiger Lily

All parts of the tiger lily plant are toxic to cats and dogs, including the leaves, petals, pollen, bulbs, seeds, and roots. The level of toxicity varies depending on the amount ingested and the size of the animal. The ASPCA lists tiger lilies as highly toxic to cats, but only mildly toxic to dogs.

Effects of Ingestion

Ingestion of tiger lilies can cause a range of symptoms in pets, including vomiting, diarrhea, lethargy, and kidney failure. In severe cases, ingestion can lead to death. It is important to note that even small amounts of the plant can cause severe injury to the kidneys, and ingesting water that has been in contact with the plant can also be dangerous.

Tiger Lilies in Relation to Other Lilies

While tiger lilies are toxic to pets, other types of lilies can be even more dangerous. Asiatic lilies, Easter lilies, daylilies, peace lilies, and lily of the valley are all highly toxic to cats and can cause kidney failure within 48 hours of ingestion. Ingestion of these types of lilies can also be fatal to dogs.

Treatment

If you suspect your pet has ingested any part of a tiger lily plant, it is important to seek veterinary care immediately. Treatment may include inducing vomiting, administering activated charcoal, and providing supportive care such as intravenous fluids.

In summary, while tiger lilies are not poisonous to humans, they can be highly toxic to pets. All parts of the plant are toxic and ingestion can lead to a range of symptoms, including kidney failure and death. It is important to understand the toxicity of tiger lilies and other types of lilies, and to seek veterinary care immediately if you suspect your pet has ingested any part of the plant.

Safety Precautions and First Aid

Preventing Exposure

To prevent exposure to tiger lilies, it is important to take the following safety precautions:

• Keep tiger lilies out of reach of children and pets, especially cats. Tiger lilies are toxic to cats and can cause kidney failure if ingested.
• Fence off areas where tiger lilies are growing to prevent livestock and horses from grazing on them.
• Store tiger lilies in containers that are not accessible to pets or livestock.
• If you have tiger lilies in your garden, wear gloves when handling the plant to avoid skin irritation.

Emergency Response to Poisoning

If you suspect that you or someone else has been poisoned by a tiger lily, take the following steps:

• Call a veterinarian or the Pet Poison Helpline immediately if a pet has ingested any part of the tiger lily plant.
• If a person has ingested a tiger lily, call Poison Control or seek medical attention immediately.
• Do not induce vomiting unless instructed to do so by a medical professional.
• If the poison is on the skin or in the eyes, flush the affected area with water for at least 15 minutes.
• If the person or pet is experiencing dehydration, provide fluids to prevent further complications.
• Bring a sample of the plant to the veterinarian or medical professional to aid in diagnosis and treatment.
• Do not give any medications or treatments without first consulting a medical professional or veterinarian.

By taking these safety precautions and knowing how to respond in case of poisoning, you can help ensure the safety of yourself, your family, and your pets.