There are many plants that are toxic to cats, and it is important for cat owners to be aware of them to keep their pets safe. Here are some of the most common toxic plants for cats, according to the search results:

• Lilies: All parts of the lily plant are toxic to cats and can cause kidney failure, even in small amounts.
• Azaleas and Rhododendrons: These plants contain toxins that can cause vomiting, diarrhea, and even coma or death in severe cases.
• Castor Bean: The seeds of this plant contain a toxin that can cause severe vomiting, diarrhea, and even death in cats.
• Chrysanthemum: These flowers contain pyrethrins, which can cause vomiting, diarrhea, and even depression of the central nervous system in cats.
• Daffodils: All parts of the daffodil plant are toxic to cats and can cause vomiting, diarrhea, and even heart problems.
• Dieffenbachia: This plant contains oxalates, which can cause oral irritation, vomiting, and difficulty swallowing in cats.
• English Ivy: This plant can cause vomiting, diarrhea, and even difficulty breathing in cats.
• Kalanchoe: This plant can cause vomiting, diarrhea, and heart problems in cats.
• Peace Lily: This plant can cause oral irritation, vomiting, and difficulty swallowing in cats.
• Sago Palm: All parts of this plant are toxic to cats and can cause vomiting, diarrhea, seizures, and even liver failure.

This is not an exhaustive list, and there are many other plants that can be toxic to cats. If you suspect that your cat has ingested a toxic plant, it is important to contact your veterinarian or a poison control center immediately for advice.