This page lists some of the safe house plants as well as some of the house plants that can be toxic to humans and possibly animals. “brightly colored” mushrooms are supposedly a warning sign but Amanita “destroying angel” mushrooms are all a bland shade of white, and while many believe that any mushroom an animal is observed eating must be safe, many woodland creatures have developed immunities to fungal toxins that are dangerous to humans. Polka dot plants are sometimes prone to powdery mildew, showing up on the foliage as white masses resembling powder. Pets and humans can fall ill if … Hypoestes phyllostachya (pink polka-dot plant) I couldn't find any good information on how or why it is toxic, but there does seem to be general agreement that Hypoestes is toxic to animals, particularly cats but probably also to dogs. Safe for People and Pets. The polka dot plant (Hypoestes phyllostachya) is hardy in your winters, so you can grow it outdoors. Polka dot plant produces small, insignificant, purple flowers. It’s an ideal plant to tuck away in other plantings for a lovely display of color. Leaf drop, distorted and stunted plant growth can occur. Peonies and their colourful blossoms are common in many gardens and floral arrangements. For all of their beauty, many people do not realise that peonies are poisonous. The plant looks really beautiful but truly dangerous for humans from inside. There are non-toxic plants that are safe around your family pets. When planted outside, a polka dot plant can grow as tall as 30.” Indoors this plant needs to be kept trimmed back and small or it will get quite leggy. The toxic plant list from American Society for Prevention of Cruelty to Animals contains a few vegetable plants that are toxic to pets and wildlife. Hypoestes phyllostachya, the polka dot plant, is a species of flowering plant in the family Acanthaceae, native to South Africa, Madagascar, and south east Asia. The information provided is compiled from the "Know Your Plants -- Safe or Poisonous?" This plant is mainly found in Eastern and Northern America. Although Hypoestes phyllostachya isn't necessarily toxic to cats, that in no way means that the plant is 100 percent harmless, either. Dynamic Graphics/Polka Dot/Getty Images. Most of these plants are toxic to humans, as well. Each and every part of the plant is declared toxic. Some cause only skin rashes or upset stomachs,. Treat severe outbreaks by spraying the entire plant with horticultural oil, mixed at a rate of 1 1/4 teaspoons of oil in one gallon of water. Some to humans, others only to pets. Remember, even apples can make you sick if you eat enough of them. If you think that your animal is ill or may have ingested a poisonous substance, contact your local veterinarian or our 24-hour emergency poison hotline directly at 1-888-426-4435. Also children can choke on a plant piece and have gagging or choking. Hot summer afternoon sun can cause leaf burn. It is said by the scientists that the most poisonous part is the fruits which contain concentrated toxic materials but it is very sweet. Some morning or evening sun is welcome. brochure that is put out by the California Poison Control System. A note on "safe" plants: The plants on this list are generally believed to be safe. The plant is non-toxic to humans and animals. Safe for People and Pets Even though lisianthus is not known to contain toxins harmful to people or animals, any plant poses the potential for harm if a piece of the plant becomes stuck in a person's or animal's throat, or … Soil. Watering Common toxic (unsafe) plants. Cane begonias have these a-symmetrical angel wing leaves growing on long bamboo-like stems. Some new varieties have pink leaves with green patches.