Is Daylily Toxic to Cats and Dogs? | Petybuzz

Q: Is daylily toxic to cats?

Highly toxic to cats. Daylilies can be lethal to cats: even small exposures, including pollen, can cause kidney failure. In dogs, lilies mostly cause stomach upset.

Q: Is daylily toxic to dogs?

Mildly toxic to dogs. Daylilies can be lethal to cats: even small exposures, including pollen, can cause kidney failure. In dogs, lilies mostly cause stomach upset.

Is Daylily Toxic to Cats and Dogs?

Hemerocallis

Cats

🔴 Highly toxic

Dogs

🟡 Mildly toxic

Short answer: Daylilies can be lethal to cats: even small exposures, including pollen, can cause kidney failure. In dogs, lilies mostly cause stomach upset.

Think your pet ate daylily? Treat it as an emergency and call your vet or the ASPCA Animal Poison Control Center at (888) 426-4435.

Signs to watch for

Cats: vomiting, lethargy, loss of appetite, then kidney failure
Dogs: stomach upset

Why it’s a problem

Toxic principle: Not specified in our source.

The ASPCA groups daylilies with true lilies (Lilium) as potentially lethal to cats.

Frequently asked questions

Are daylilies safe to plant if I have an outdoor cat?

The ASPCA says lilies, including daylilies, can be lethal to cats. Consider removing them if your cat can reach them.

Other plants

Poinsettia
Hydrangea
Fiddle Leaf Fig
Easter Lily
Hosta
Peace Lily

Sources

ASPCA: Do You Know Which Flowers and Plants are Toxic to Pets?
ASPCA: Top 10 Toxic Plants for Pets

Last checked: 2026-11-11. General information, not veterinary advice.