These plants are toxic to cats, grouped from the most dangerous to those that usually cause only mild stomach upset. Lilies are the biggest danger: even a small amount of pollen can cause kidney failure in cats.
Among the plants we cover, true lilies and daylilies, sago palm, oleander and autumn crocus are rated highly toxic. Any exposure needs a vet right away.
Call your vet or the ASPCA Animal Poison Control Center at (888) 426-4435 and take the plant or a photo of it with you.
Ratings come from the ASPCA Animal Poison Control Center and are cited on each plant page. This list covers the plants we have reviewed so far (52); we add more regularly. Last checked: 2026-11-11. See all plants →