Home & Garden Garden 5 Health Benefits of Houseplants By Melissa Breyer Melissa Breyer Twitter Editorial Director Hunter College F.I.T., State University of New York Cornell University Melissa Breyer is Treehugger’s editorial director. She is a sustainability expert and author whose work has been published by the New York Times and National Geographic, among others. Learn about our editorial process Updated January 10, 2021 Treehugger / Kara Riley Share Twitter Pinterest Email Garden Indoor Gardening Planting Guides Urban Farms Insects Houseplants have been going in and out of vogue ever since the early Greeks and Romans starting bringing their plants in from the outdoors. The Victorians loved their potted palms and the 70s wouldn’t have been the same without ferns and spider plants ... everywhere. Current style dictates a lighter hand with the green things – sculptural stems and succulents rule the roost – but the truth is this: Houseplants should transcend trends. The benefits they confer should make us consider them a necessity rather than an object of décor, because honestly, good health should never be out of style. If you need convincing, here are some of the ways that bringing plants inside helps us out. 1. They give an assist in breathing Treehugger / Kara Riley Inhaling brings oxygen into the body, exhaling releases carbon dioxide. During photosynthesis, plants do the opposite, of sorts. They absorb carbon dioxide and release oxygen, making plants and people great partners when it comes to gasses. Plants help to increase oxygen levels, and our bodies appreciate that. But here’s something to know: When photosynthesis stops at night, most plants switch things up and absorb oxygen and release carbon dioxide. However, a few special plants – like orchids, succulents and epiphytic bromeliads – flip that script and take in carbon dioxide and release oxygen. Meaning, use these plants in bedrooms to keep the oxygen flowing at night. 2. They help deter illness Treehugger / Kara Riley In the great outdoors, plant roots tap the groundwater table for water which then evaporates through its leaves in a process known as transpiration. Studies show that this accounts for about 10 percent of the moisture in the atmosphere. The same thing happens at home (minus the groundwater table part), which increases the humidity indoors. While this may sound unappealing during hot moist months, it’s a gift during drier months or if you live in an arid clime. Studies at the Agricultural University of Norway document that using plants in interior spaces decreases the incidence of dry skin, colds, sore throats, and dry coughs. Other research reveals that higher absolute humidity is conducive for decreased survival and transmission of the flu virus. 3. They clean the air Treehugger / Kara Riley NASA has spent a lot of time researching air quality in sealed environments, which makes sense. Extensive research by the space agency discovered a then-new concept in indoor air quality improvement in which plants play a pivotal role: “Both plant leaves and roots are utilized in removing trace levels of toxic vapors from inside tightly sealed buildings. Low levels of chemicals such as carbon monoxide and formaldehyde can be removed from indoor environments by plant leaves alone.” When talking about the relationship between plants and space travelers, NASA notes that plants, "provide nourishment for the body when eaten as food, and they improve the quality of indoor air. Plants take the carbon dioxide from air to produce oxygen that humans can breathe." Some of the best air-purifying plants, according to the agency, are: Golden pothos (Scindapsus aureus)English ivy (Hedera helix)Chrysanthemum (Chrysanthemum morifolium)Gerbera daisy (Gerbera jamesonii)Bamboo palm (Chamaedorea seifrizii)Red-edge dracaena (Dracaena marginata) 4. They boost healing Treehugger / Kara Riley Bringing flowers or a plant while visiting a hospital patient may be verging on cliché, but so effective are plants in helping surgery patients recover that one study recommends them as a “noninvasive, inexpensive, and effective complementary medicine for surgical patients.” The study, conducted at Kansas State University, found that viewing plants during recovery from surgery led to a significant improvement in physiologic responses as evidenced by lower systolic blood pressure, and lower ratings of pain, anxiety, and fatigue as compared to patients without plants in their rooms. Another technique to decrease recovery time is horticulture therapy in which patients are tasked with taking care of plants. The patients who physically interact with plants experience a significantly reduced recovery time after medical procedures. 5. They help you work better Treehugger / Kara Riley A number of studies have revealed that studying or working in the presence of plants can have a pretty dramatic effect. As with simply being in nature, being around plants improves concentration, memory and productivity. Meanwhile, two Norwegian studies found that worker productivity is greatly enhanced by the presence of plants in the office. “Keeping ornamental plants in the home and in the workplace increases memory retention and concentration,” notes Texas A&M Extension. “Work performed under the natural influence of ornamental plants is normally of higher quality and completed with a much higher accuracy rate than work done in environments devoid of nature.” View Article Sources “How Come Plants Produce Oxygen Even Though They Need Oxygen for Respiration?.” University of California, Santa Barbara ScienceLine. Roberts, Carter. "Four Benefits of Houseplants." South Dakota State University Extension. “Evapotranspiration and the Water Cycle.” United States Geological Survey. Wei, Jianhui, et al “Atmospheric Residence Times from Transpiration and Evaporation to Precipitation: an Age‐Weighted Regional Evaporation Tagging Approach.” JGR Atmospheres, vol. 121, 2016, pp. 6841-6862., doi:10.1002/2015JD024650 “1317 – Houseplants: Temperature & Humidity.” Colorado State University Extension. Fjeld, Tove. “The Effect of Interior Planting on Health and Discomfort among Workers and School Children.” HortTechnology, vol. 10, 2000, pp. 46-52., doi:10.21273/HORTTECH.10.1.46 Tamerius, JD, et al. "Environmental Predictors of Seasonal Influenza Epidemics Across Temperate and Tropical Climates." PLoS Pathog, vol. 9, 2013, doi:10.1371/journal.ppat.1003194 Wolverton, B. “Foliage Plants for Improving Indoor Air Quality.” The National Aeronautics and Space Administration. “Plants in Space.” The National Aeronautics and Space Administration. 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