Philodendron is a large genus of flowering plants in the Araceae family. The two most effective air-purifying Philodendrons are the Heartleaf Philodendron (Philodendron scandens `oxycardium’) and the Elephant Ear Philodendron (Philodendron domesticum).
The Heartleaf Philodendron, often used in hanging baskets or trained to climb, is easy to grow and can tolerate a wide range of conditions. This native of Mexico and Central America adds oxygen to the air and filters out toxins such as carbon monoxide, formaldehyde and benzene.
The Elephant Ear Philodendron is a very low-maintenance houseplant that can easily survive in just about any place in a room — and they even respond well to artificial light. This Philodendron is not a climber and has large, broad, heart-shaped leaves as well as the same air-cleansing qualities as its cousin.
Please note that Philodendrons are poisonous to cats and dogs.