Are All Houseplants Good for the Air? Debunking Common Myths

Jun 09, 2025By Ashley Marie
Ashley Marie

The Myth of Houseplants as Air Purifiers

For years, many of us have believed that houseplants are not only beautiful additions to our homes but also effective air purifiers. This belief stems largely from a NASA study conducted in 1989, which suggested that certain plants could remove toxins from the air. However, the conditions of the study were quite different from those in a typical home environment.

The NASA study was conducted in a controlled laboratory setting, using small, sealed chambers. In such an environment, plants were able to filter toxins effectively. However, the scale and conditions of the study don't translate directly to most homes. In reality, you would need a large number of plants to see a significant impact on air quality in a typical living space.

houseplants indoors

Understanding the Real Benefits of Houseplants

While houseplants may not be the air-purifying powerhouses we once thought, they do offer other valuable benefits. For instance, plants can help increase humidity levels in your home, which can lead to improved skin health and respiratory comfort. Additionally, the presence of greenery can boost mood and reduce stress levels, making them a valuable addition to your living space for mental well-being.

Moreover, plants can have a positive effect on indoor acoustics by absorbing sound. This can be particularly beneficial in open-plan living spaces or home offices where noise can be distracting. So, while their air-purifying capabilities may be limited, houseplants still bring numerous advantages to our indoor environments.

greenery home

Debunking Common Myths About Houseplants

Several myths about houseplants and air quality persist, leading to misconceptions about their effectiveness. One common myth is that all plants purify air equally. In reality, different plants have different capabilities when it comes to filtering air, and not all of them are efficient at removing toxins.

Another myth is that simply having a few plants around will significantly improve air quality. As mentioned earlier, it would take dozens of plants in a single room to replicate the effects observed in the NASA study. Most homes would require an impractical number of plants to achieve noticeable air purification.

Choosing the Right Plants for Your Home

While not all houseplants are created equal in terms of air purification, some do stand out for their ability to remove specific toxins. If you're interested in maximizing the air-purifying potential of your indoor garden, consider incorporating species like peace lilies, snake plants, and spider plants. These plants have been shown to filter certain common toxins more effectively than others.

indoor plants types

Additionally, it's important to select plants that thrive in your home's specific conditions, such as light levels and humidity. A healthy plant is more likely to contribute positively to your home's atmosphere, both aesthetically and functionally.

The Bottom Line on Houseplants and Air Quality

In conclusion, while houseplants may not drastically improve indoor air quality on their own, they offer a range of other benefits that make them worthwhile additions to any home. By understanding the limitations of their air-purifying abilities and focusing on their other positive attributes, you can make informed choices about the plants you bring into your living space.

Ultimately, combining houseplants with other strategies like proper ventilation and the use of air purifiers is the best approach to maintaining healthy indoor air quality. Embrace the beauty and benefits of houseplants while remaining realistic about their role in air purification.