Yes, mums (chrysanthemums) are poisonous to cats. All parts of the plant, including flowers, leaves, stems, and pollen, contain toxic substances such as pyrethrins and sesquiterpene lactones, which can cause symptoms like vomiting, diarrhea, drooling, loss of appetite, loss of balance, skin irritation, and rash in cats. These symptoms usually appear within about 2 hours of ingestion. If a cat is exposed to mums, it is advised to remove any plant matter from the cat and consult a veterinarian or pet poison control immediately for treatment and advice. Preventing access to mums is the best way to protect cats, either by removing the plants or placing them where cats cannot reach.
