7. Boston Fern
Scientific name: Nephrolepis exaltata
Native to the soggy, soft wetlands of the United States southeast, this Boston Fern is quite an air-purifying champion, indeed.
It removes formaldehyde which is a commonly known pollutant indoors that comes through many cleaning agents, and some specific building materials or furniture. Studies have documented it as very efficient for removing formaldehyde. It ranks high among others in cleaning the indoor atmosphere. It also serves as an effective humidifier, saving dry-skinned people or those with sinus problems from depression.