A toxic plant is any plant that contains harmful substances that can cause illness or injury to humans and animals. These plants may produce toxins in their leaves, stems, flowers, or seeds, which can lead to symptoms ranging from mild irritation to severe poisoning. Common examples of toxic plants include poison ivy, oleander, and deadly nightshade. Exposure to toxic plants can occur through skin contact, ingestion, or inhalation of their parts or oils. It is important to identify and avoid these plants, especially in outdoor settings. Proper education about toxic plants can help prevent accidental poisoning and promote safety in nature.