Signup to receive email updates

or follow our RSS feed

follow our RSS feed

Blog Banner

Rhonda Ferree's ILRiverHort

Rhonda Ferree's Horticulture Blog
Mother in Laws Tongue houseplant (Sansevieria)

Houseplants Clean Air in Our Homes

Houseplants in your home or office are not only pretty and also help clean the air. Research shows that houseplants play an important role in cleaning the air we breathe.

Many years ago, a team of National Aeronautics and Space Administration (NASA) researchers lead by Dr. Bill Wolverton tested the effect of fifteen houseplants on three pollutants known to be present in spacecrafts.

These same three pollutants--benzene, formaldehyde and trichloroethylene--are present in homes and office buildings. Benzene is a very commonly used solvent that is present in many common items including gasoline, inks, oils, paints, plastics, and rubber. Formaldehyde is a chemical found in virtually all indoor environments, including modern office furniture, grocery bags, and in floor coverings, carpet backings and permanent-press clothes. Trichloroethylene (TCE) is used in printing inks, paints, lacquers, varnishes, and adhesives.

NASA found that certain houseplants removed as much as 87 percent of indoor air pollutants within 24 hours under controlled conditions. Each plant type was placed in sealed, Plexiglas chambers in which chemicals were injected.

The top plants included Bamboo Palm, Chinese Evergreen (Aglaonema), English Ivy, Gerbera Daisy, Janet Craig Dracaena, Corn Plant Dracaena, Mother-in-Law's Tongue, Pot Mum, Peace Lily, Warneckii, Dracaena, Philodendron, Spider Plant, and Golden Pothos.

Most effective in removing formaldehyde was the philodrendron, spider plant, and pothos. Flowering plants such as gerbera daisy and chrysanthemums were rated superior in removing benzene from the chamber atmosphere. Other good performers are Dracaena massangeana, Spathiphyllum, and Golden Pothos. "Plants take substances out of the air through the tiny openings in their leaves," Wolverton said. "But research in our laboratories has determined that plant leaves, roots and soil bacteria are all important in removing trace levels of toxic vapors".

The NASA researchers suggest that for the test plants to be effective "air cleaners" it is necessary to use one potted plant per 100 square feet of home or office space.

Please share this article with your friends!
Share on Facebook Tweet on Twitter Pin on Pinterest