Houseplants are awesome indoor air cleaners, but some of them are more effective than others at filtering out pollutants and toxic chemicals in the air. Here are the best five air-filtering plants, according to a NASA study.
NASA researchers set out to find the best ways to clean the air in space stations. Their Clean Air study found the plants below are effective at removing benzene, formaldehyde, and trichloroethylene, xylene, and ammonia from the air—chemicals that have been linked to health effects like headaches and eye irritation.
Below are the plants that make the best natural air filters. NASA research suggests having at least one plant per 100 square feet of home or office space.
1. Spathiphyllum (Peace Lily)
Often referred to as a Peace Lily, this beautiful evergreen plant is widely regarded to be easy to care for, even for those that don’t have a green thumb. They require very little light or water to remain healthy, which is one of the main reasons why they’re one of the most popular plants to keep in your home. In fact, Spathiphyllum should never be put in direct sun light, as the rays of sun may lead to leaf burn. While they are great to have inside your home, they also work remarkably well as a groundcover around your home, especially in areas where grass is hard to grow because of the shade.
NASA’s analysis of indoor houseplants revealed that the Peace Lily was the most efficient at removing airborne Volatile Organic Compounds, including formaldehyde, trichloroethylene, toluene, xylene, ammonia, and benzene. Simply put it in a dark corner, give it water once a week and this little plant will help purify the air around that general area.
The major downside of Spathiphyllum, however, is that it is mildly toxic to both humans and pets. If you ingest any part of this plant, you may start to feel nauseous, experience difficulty when swallowing, or feel a burning sensation in your mouth or skin. If you start to feel any of these symptoms as a result of ingesting Spathiphyllum then it would be wise to seek medical help immediately.
2. Chrysanthemum morifolium (Florist’s Chrysanthemum)
Sometimes called Florist’s daisy or Hardy Garden Mum, this houseplant is another popular perennial plant that people like to have in their home. Unlike the Peace Lily, this houseplant loves direct sunlight and a medium amount of water.
With the proper care and right type of soil, the Chrysanthemum morifolium will start to produce lots of beautiful blooms of various colors. These blooms not only help brighten the room, they also help cleanse the air of many chemicals that are common in homes. These include formaldehyde, xylene, ammonia, benzene, toluene, and trichloroethylene.
Words of caution on this houseplant. While they are beautiful to have around, they are also poisonous to animals. If your dog or cat has ingested any part of this plant, they will likely experience diarrhea, dermatitis, vomiting and a lack of coordination. If your pet has consumed this plant, please call your veterinarian as soon as possible.
3. Hedera helix (English Ivy)
Often called English Ivy or European Ivy, Hedera helix is another popular houseplant that helps filter airborne toxins inside your home. According to NASA’s Clean Air Study, English Ivy is effective at cleansing benzene, formaldehyde, xylene and toluene from the air. The English ivy is a must-have herb in your home. It is extremely potent, and within six hours, it will remove 58% feces particles and 60% of the toxins in the air. Additionally, other studies have indicated that English Ivy also helps reduce mold in your home.
This evergreen climbing vine is extremely popular in outdoor landscaping. You may have seen it used as ground-cover in areas where grass doesn’t grow, or perhaps climbing up the side of a wall or tree trunk. Because of its “carefree” nature, it has grown in popularity over the years. However due to it spreading aggressively, horticulturists say you should be hesitant in using it outside and should only keep it as an indoor plant. This prevents it from invading other plants around your home, and has the added benefit of purifying the air in your home.
Caring for Hedera helix is relatively easy. Keep it at a constant temperature, give it plenty of direct sunlight and water generously with well-drained soil. If you can do these three things, English Ivy will return the love with cleaner air in your home.
4. Sansevieria trifasciata (Snake Plant)
Often referred to as Snake Plant or Mother-In-Law’s Tongue, this evergreen perennial plant is another houseplant that is known to improve your indoor air quality. According to NASA, it is one of the best houseplants for absorbing airborne toxins, including formaldehyde, nitrogen oxide, benzene, xylene and trichloroethylene.
Even though it is native to Western Africa, Sansevieria trifasciatahas risen in popularity over the last few decades and is now widely grown all over the world. It’s a great plant to have indoors, as it can endure low amounts of light at long durations. However, it prefers to have plenty of bright light. Just make sure you don’t overwater this plant, as it is likely to rot if the soil is too moist for too long.
If you have no houseplants around your home, then Sansevieria trifasciata is one of the best for you to start off with. They grow well both inside and out, and they require very little maintenance. Just be careful if you have pets, as this plant may be toxic when it is ingested.
5. Dracena reflexa (Red-Edged Dracaena)
Often called Red-Edged Dracaena or Pleomele, Dracaena reflexa is an upright evergreen shrub that produces narrow green, yellow or cream-colored leaves. Once the plant starts to mature, you may notice small white flowers start to bloom, shortly followed by small red-orange berries.
This low-maintenance plant is extremely popular in America not just because it looks cool, but also because it takes little work to keep it alive. All you need to do to keep this plant alive, is keep it in an area with indirect sunlight and keep the soil slightly moist.
According to the NASA Clean Air Study, Dracaena reflexa is one of the most efficient plants at removing formaldehyde from the air in your home, as well as other VOCs, including benzene, trichloroethylene, and xylene. However, keep your pets away from this plant, as it can be toxic to animals when ingested.