I’ve chosen to list some plants that are non-toxic to humans, dogs, and cats. It should be noted that even non-toxic plants can be irritating to the digestive tract if eaten in large amounts, however. In addition, some humans and animals have a sensitivity to the effects of a particular plant that other individuals lack. I use the ASPCA website (American Society for the Prevention of Cruelty to Animals) as my main source for determining whether a plant is safe for dogs and cats.
The African violet (Saintpaulia) is one of my favorite houseplants because it’s so pretty and it’s non-toxic for my pets. I love Christmas cactus (Schlumbergera) for the same reason. The cactus is also easy to care for. Other non-toxic plants that I haven’t kept in my home include the Boston fern (Nephrolepis exaltata), Peperomia, the prayer plant or maranta (various scientific names), and the lipstick plant (Aeschynanthus).