Did you know that adding plants to your indoor space may help improve air quality — and potentially support your energy, focus, and overall well-being?

It’s true. While houseplants are often chosen for aesthetics, research suggests they may also contribute to cleaner indoor environments. Some studies estimate that plants can help reduce certain indoor air pollutants under controlled conditions, sometimes by up to 20–25% depending on the setting (Wolverton et al., 1989).

Cleaner air means fewer airborne toxins, better oxygen exchange, and a more refreshing space to live and work.

So if you’re looking for a simple, natural way to support your health, adding a little green to your space may be a great place to start.

Let’s explore the science behind it.

Why Indoor Air Quality Matters

Most people spend about 90% of their time indoors (U.S. Environmental Protection Agency [EPA], 2022). That means the air inside your home or office plays a major role in your health.

Indoor air can contain pollutants such as:

• Volatile organic compounds (VOCs) from furniture, paint, and cleaning products

• Formaldehyde from pressed wood products

• Benzene from plastics and synthetic materials

• Carbon dioxide buildup from poor ventilation

Poor indoor air quality has been associated with headaches, fatigue, respiratory irritation, and difficulty concentrating.

Improving ventilation is important — but plants may provide an additional supportive role.

What the Research Says About Plants and Air Purification

In 1989, NASA conducted a now-famous study exploring whether plants could help clean air in sealed environments like space stations (Wolverton et al., 1989). The study found that certain plants were able to reduce levels of VOCs such as benzene and formaldehyde in controlled chambers.

Plants such as:

• Snake plant

• Peace lily

• Spider plant

• Golden pothos

showed measurable pollutant reduction under laboratory conditions.

More recent research confirms that plants can absorb certain airborne compounds through their leaves and root systems (Irga et al., 2013). Microorganisms in the soil may also contribute to breaking down pollutants.

However, it’s important to clarify: in real-world homes with normal ventilation, plants alone may not replace proper air filtration systems. Instead, they can serve as a complementary strategy alongside good airflow and clean living habits (EPA, 2022).

Even so, the measurable improvements observed in controlled settings support the idea that indoor greenery can contribute positively to air quality.

How Plants May Support Oxygen Flow

Plants absorb carbon dioxide and release oxygen during photosynthesis. While the oxygen contribution in a typical home may not dramatically alter atmospheric composition, the psychological and perceived freshness of plant-filled spaces is significant.

Research published in Environmental Health Perspectives suggests that indoor plants may improve perceived air quality and comfort (Dijkstra et al., 2008).

The presence of greenery has also been linked to improved ventilation perception, which may enhance overall well-being.

Cleaner-feeling air and improved oxygen exchange can help reduce fatigue and support cognitive function — particularly in indoor office environments.

Plants and Cognitive Performance

The benefits of indoor plants may extend beyond air purification.

A study published in the Journal of Environmental Psychology found that the presence of plants in workspaces improved concentration and productivity (Nieuwenhuis et al., 2014).

Another study in Building and Environment found that indoor plants were associated with reduced stress levels and improved mood among participants (Lohr et al., 1996).

Researchers suggest that exposure to natural elements indoors can:

• Reduce mental fatigue

• Improve attention restoration

• Enhance emotional well-being

This aligns with the broader concept of biophilia — the idea that humans have an innate connection to nature.

In other words, even if plants didn’t change air chemistry dramatically, they may still positively influence your brain.

Energy, Mood, and Overall Well-Being

Cleaner indoor air is associated with fewer symptoms like headaches and sluggishness (EPA, 2022).

Meanwhile, being surrounded by plants has been shown to:

• Lower cortisol (stress hormone) levels

• Improve feelings of calm

• Increase positive mood

A 2015 study in Journal of Physiological Anthropology found that interacting with indoor plants reduced physiological and psychological stress compared to computer tasks (Lee et al., 2015).

That combination — cleaner air plus stress reduction — can contribute to better energy levels and mental clarity.

Best Indoor Plants for Air Support

If you’re ready to add greenery to your space, here are a few beginner-friendly options:

🪴 Snake Plant (Sansevieria)

Low maintenance, tolerates low light, and often highlighted in air purification research.

🪴 Peace Lily

Known for its ability to absorb certain VOCs in lab settings.

🪴 Spider Plant

Easy to grow and adaptable to many indoor environments.

🪴 Pothos

Hardy, forgiving, and excellent for shelves or hanging baskets.

These plants require minimal care and can thrive indoors with indirect light.

Practical Tips for Maximizing Indoor Air Quality

While plants are helpful, they work best as part of a broader indoor air strategy:

• Open windows when possible for ventilation

• Use air purifiers if needed

• Avoid smoking indoors

• Limit synthetic fragrances

• Clean regularly to reduce dust buildup

• Choose low-VOC paints and furniture

Plants complement these habits — they don’t replace them.

A Simple Step Toward Better Living

Adding plants to your space is one of the easiest health-supportive habits you can adopt.

You don’t need expensive equipment.
You don’t need complicated routines.
You just need a little green.

Whether it’s a small pot on your desk or a leafy plant in the corner of your living room, greenery brings both visual calm and potential environmental benefits.

Your space feels fresher.
Your mind feels clearer.
Your environment feels more alive.

Final Thoughts 🌱

Fun Fact Friday reminder:

Indoor plants may help improve air quality under certain conditions — and even when the chemical impact is modest, the psychological and wellness benefits are meaningful.

Cleaner-feeling air.
Better focus.
Reduced stress.
More connection to nature.

If you’re looking for a simple way to support your well-being, start by adding a little green to your space.

Your body — and your mind — may thank you.

References

Dijkstra, K., Pieterse, M. E., & Pruyn, A. (2008). Stress-reducing effects of indoor plants in healthcare settings. Environmental Health Perspectives, 116(4), 584–589.

Irga, P. J., Torpy, F. R., & Burchett, M. D. (2013). Can hydroculture systems reduce indoor air pollutants? Atmospheric Environment, 77, 267–271.

Lee, M. S., Lee, J., Park, B. J., & Miyazaki, Y. (2015). Interaction with indoor plants may reduce psychological and physiological stress. Journal of Physiological Anthropology, 34, 21.

Lohr, V. I., Pearson-Mims, C. H., & Goodwin, G. K. (1996). Interior plants may improve worker productivity and reduce stress. Journal of Environmental Horticulture, 14(2), 97–100.

Nieuwenhuis, M., Knight, C., Postmes, T., & Haslam, S. A. (2014). The relative benefits of green versus lean office space. Journal of Experimental Psychology: Applied, 20(3), 199–214.

U.S. Environmental Protection Agency (EPA). (2022). Indoor Air Quality Basics.

Wolverton, B. C., Johnson, A., & Bounds, K. (1989). Interior Landscape Plants for Indoor Air Pollution Abatement. NASA.