§ Toxic plants · 7 plants · Checked Oct 2026
Lilies toxic to cats
True lilies (Lilium) and daylilies (Hemerocallis). Peace lilies and calla lilies are different plants; they are on the houseplants and garden lists. The ASPCA Animal Poison Control Center lists all 7 as toxic to cats; each one below has the signs to watch for and a severity rating from Plant Smart.
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§ 010 · The list
Every plant on this list
| Plant | Cats | Dogs | Severity |
|---|---|---|---|
| Daylilies Hemerocallis spp. | Toxic | — | Critical |
| Easter lily Lilium longiflorum | Toxic | — | Critical |
| Showy Japanese lily Lilium speciosum | Toxic | — | Critical |
| Tiger lily Lilium tigrinum | Toxic | — | Critical |
| True lilies Lilium spp. | Toxic | — | Critical |
| Western lily Lilium occidentale | Toxic | — | Severe |
| Wood lily Lilium philadelphicum | Toxic | — | Severe |
§ 020 · If it happened
What to do if your pet ate one
Call your vet or a pet poison hotline straight away, even if your pet seems fine: the ASPCA Animal Poison Control Center, (888) 426-4435, or Pet Poison Helpline, (855) 764-7661. Both are open 24 hours and charge a fee. Have the plant or a photo of it to hand, and don’t make your pet vomit unless a vet tells you to.
§ 030 · Plant by plant
Plant by plant
Are daylilies toxic to cats?
Yes. Daylilies (Hemerocallis spp.) are toxic to cats, according to the ASPCA Animal Poison Control Center. Plant Smart rates their effects Critical, level 4 of 4. Signs include vomiting, loss of appetite, lethargy and kidney failure. Eaten in quantity, it can be fatal.
Is Easter lily toxic to cats?
Yes. Easter lily (Lilium longiflorum) is toxic to cats, according to the ASPCA Animal Poison Control Center. Plant Smart rates its effects Critical, level 4 of 4. Signs include vomiting, loss of appetite, lethargy, kidney failure, drooling, dullness or depression, peeing more than usual, weakness and lying down and unable to get up. Eaten in quantity, it can be fatal. Read the full page on Easter lily.
Is showy Japanese lily toxic to cats?
Yes. Showy Japanese lily (Lilium speciosum) is toxic to cats, according to the ASPCA Animal Poison Control Center. Plant Smart rates its effects Critical, level 4 of 4. Signs include vomiting, loss of appetite, lethargy, kidney failure, drooling, dullness or depression, peeing more than usual, weakness and lying down and unable to get up. Eaten in quantity, it can be fatal.
Is tiger lily toxic to cats?
Yes. Tiger lily (Lilium tigrinum) is toxic to cats, according to the ASPCA Animal Poison Control Center. Plant Smart rates its effects Critical, level 4 of 4. Signs include vomiting, loss of appetite, lethargy, kidney failure, drooling, dullness or depression, peeing more than usual, weakness and lying down and unable to get up. Eaten in quantity, it can be fatal. Read the full page on tiger lily.
Are true lilies toxic to cats?
Yes. True lilies (Lilium spp.) are toxic to cats, according to the ASPCA Animal Poison Control Center. Plant Smart rates their effects Critical, level 4 of 4. Signs include vomiting, loss of appetite, lethargy, kidney failure, drooling, dullness or depression, peeing more than usual, weakness and lying down and unable to get up. Eaten in quantity, it can be fatal. Read the full page on true lilies.
Is western lily toxic to cats?
Yes. Western lily (Lilium occidentale) is toxic to cats, according to the ASPCA Animal Poison Control Center. Plant Smart rates its effects Severe, level 3 of 4. Signs include kidney failure, vomiting, drooling, dullness or depression, peeing more than usual, weakness and lying down and unable to get up.
Is wood lily toxic to cats?
Yes. Wood lily (Lilium philadelphicum) is toxic to cats, according to the ASPCA Animal Poison Control Center. Plant Smart rates its effects Severe, level 3 of 4. Signs include kidney failure, vomiting, drooling, dullness or depression, peeing more than usual, weakness and lying down and unable to get up.
§ 040 · Questions
Questions about lilies toxic to cats
Which of these are the most dangerous?
Plant Smart rates Daylilies, Easter lily, Showy Japanese lily, Tiger lily and True lilies Critical, the highest of its four levels.
What should I do if my pet ate one?
Call your vet or a pet poison hotline right away, even before signs appear: the ASPCA Animal Poison Control Center at (888) 426-4435, or Pet Poison Helpline at (855) 764-7661. Both charge a fee. Have the plant, or a photo of it, to hand.
Where does this list come from?
From the ASPCA Animal Poison Control Center's plant list, by way of Plant Smart, which adds a four-level severity rating.
Is a plant missing from this list safe?
Not necessarily. A plant can be missing because nobody has reported a case. Call your vet if your pet eats any plant and seems unwell.