Some indoor plants that clean the air are the garden mum, spider plant, dracaena, ficus and peace lily, according to Simple Organic Life's website. The Boston fern, snake plant, bamboo palm and aloe vera also help freshen indoor air quality.
Ranked among the top five greatest threats to public health by the EPA, indoor air pollution is even worse than the air pollution outside, reports the Simple Organic Life website; however, houseplants can help get rid of some of the pollutants caused by stagnant indoor air.
The garden mum was found by NASA to be an air-purifying workhorse. It is popular and relatively inexpensive, and it removes ammonia, benzene, formaldehyde and xylene from the air. Dracaena, with over 40 varieties of its kind, removes benzene, formaldehyde, trichloroethylene and xylene, but it is toxic to cats and dogs. Ficus trees grow quite large, between two and 10 feet tall, but also remove benzene, trichloroethylene and formaldehyde from indoor air.
The Boston fern is perfect for the bathroom, as it thrives in cool locations. It removes pollutants such as xylene and formaldehyde from the air. A snake plant, which needs to be watered only occasionally and does well in drier environments, removes benzene, formaldehyde, trichloroethylene and xylene. Aloe vera, which has many uses, is very effective at getting rid of formaldehyde.