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Is Day Lilies (many varieties) toxic to cats?

YES (TOXIC)
Unfortunately, Day Lilies (many varieties) is toxic and potentially harmful to cats. We recommend you keep your feline friends away from this plant. See the table below for more information.
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Additional Names:many varieties
Scientific Name:Hemerocallis spp.
Family:Xanthorrhoeaceae
Toxic Principles:Unknown
Clinical Signs:Cats: Vomiting, inappetence, lethargy, kidney failure, death.
If you think your cat may have ingested a poisonous substance, call 888 426 4435 or your local vet
Detailed Write-up
Author:
Alec
Last Updated:
7/13/25

Are Day Lilies (Many Varieties) Toxic to Cats?

Introduction

If you are a cat lover who loves to grow plants and flowers, you may be wondering whether Day Lilies are toxic to cats. It's a great concern as the pet cats are curious creatures and they always love to explore their habitat. Unfortunately, some of the plants we love may pose a significant danger to their health. Therefore, pet owners must be aware of plants that are toxic to their furry friends. This article aims to clarify whether Day Lilies are toxic to cats and what the consequences will be if they eat them.

What Are Day Lilies?

Day Lilies are widely cultivated flowers known for their vibrant colors and a bloom that lasts for only one day. These flowers are of the genus Hemerocallis and are native to Asia. Day Lilies have a fan of fleshy roots and blade-shaped leaves. The flowers are trumpet-shaped, with three petals, three sepals, and a central pistil. The blooms come in a variety of colors, including orange, yellow, red, pink, and purple, with some varieties having bicolored or striped petals. Day Lilies are easy to grow and are suitable for gardens, containers, and borders.

Are Day Lilies Toxic to Cats?

According to the American Society for the Prevention of Cruelty to Animals (ASPCA), Day Lilies are not toxic to cats. Although these flowers contain certain toxins, they are not harmful to cats. Ingesting Day Lilies may result in mild digestive distress, such as vomiting, diarrhea, or nausea. However, the symptoms are not usually severe, and they do not cause any long-term health issues.

What Happens If a Cat Eats Day Lilies?

While Day Lilies are unlikely to cause serious harm to your pet, you should still be careful if your cat eats them. Some cats may have allergic reactions after ingesting Day Lilies, resulting in swelling and redness around the mouth, eyes, or skin. This may be due to an intolerance to the compounds found in the flowers. Most cats recover from these symptoms within a few hours or days, but it's important to keep an eye on them and seek veterinary care if the symptoms persist or if your cat develops severe symptoms.

What Are The Toxic Compounds In Day Lilies?

Day Lilies contain certain toxic compounds that may cause digestive disturbances and other symptoms, but these are not usually severe or life-threatening. The primary toxic constituents found in Day Lilies are saponins and tulipalins. Saponins are compounds that can cause gastrointestinal irritation, such as vomiting, diarrhea, or nausea. Tulipalins are allergenic compounds that can cause skin rash or irritation in some cats.

How to Protect Your Cat from Toxic Plants?

If you are a cat owner, it's essential to know which plants and flowers are toxic to your pets. While Day Lilies are not toxic to cats, there are many other plants that can be lethal to them. Some of the common house and garden plants that are toxic to cats include lilies, azaleas, chrysanthemums, sago palms, tulips, amaryllis, daffodils, and many others. Therefore, it is always best to research the safety of a plant before bringing it home.

Conclusion

In conclusion, it is safe to say that Day Lilies are not toxic to cats, but they may cause mild digestive distress and allergic reactions in some pets. Therefore, it's essential to keep an eye on your cat if they happen to eat these flowers. As a responsible cat owner, you should always make an effort to know which plants are toxic to your pets and try to avoid them. Keeping your cat away from toxic plants is crucial for your pet's safety and well-being.
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