Do Office Plants Purify the Air?

One of the most frequent questions facility directors and workplace designers ask us is: “Which plants are best for purifying office air?”

If you’ve researched this online, you’ve likely seen conflicting answers. Headlines range from touting plants as natural air filters to articles claiming their air-cleaning abilities are a complete myth.

The reality? It’s complicated — and it all comes down to lighting.

Many popular headlines claiming plants don’t purify air rely on studies that placed plants under poor, antiquated lighting, like standard office fluorescent bulbs. In reality, a plant’s ability to absorb carbon dioxide (CO₂), release oxygen (O₂), and scrub volatile organic compounds (VOCs) is directly proportional to the amount and quality of light it receives to drive photosynthesis.

Simply put: a few small potted plants sitting in a dark interior conference room will have a negligible impact on air chemistry. A thriving, well-lit botanical installation — supported by tailored spectrum lighting — has a measurable, positive impact on air quality, humidity, and oxygen levels.

While air purification requires high light intensity — photon levels measured in µmol·m⁻²·s⁻¹ — and specific plant density to be quantified, the broader cognitive, emotional, and physical benefits of plants in commercial spaces are universally proven.

This is why leading building frameworks like the WELL Building Standard and the Living Building Challenge prioritise biophilic elements. Rather than chasing outdated NASA study claims, forward-thinking companies integrate professional plantscapes for their impact on human performance, workplace wellness, and office culture.

Integrating living design into corporate environments delivers measurable returns on employee satisfaction and operational performance.

A 15% increase in productivity. Research by the University of Exeter found that filling previously “lean” office environments with plants boosted employee productivity by 15%.

Attention restoration. According to Attention Restoration Theory, observing natural elements shifts the brain into a restorative processing mode, helping employees recover from mental fatigue and hold sharper focus.

Acoustic dampening. Plants absorb and scatter high-frequency sound waves rather than letting them bounce off hard surfaces. Strategic placement along room perimeters and open plans helps quiet background office noise.

Humidity control. Research from the Royal Horticultural Society shows that plant transpiration raises relative humidity toward ideal human comfort levels. Proper ambient humidity reduces airborne dust, calms respiratory irritation, and improves overall workplace comfort.

At Greenery NYC we don’t just place plants in spaces — we engineer micro-ecosystems.

Because photosynthesis directly governs plant health, carbon capture, and longevity, getting the right light spectrum and intensity — measured in µmol — is paramount. This is why our design team works closely with architects and facility leads to integrate dedicated, aesthetic architectural grow lights into interior layouts.

Sufficient light ensures your commercial plantscapes don’t just survive; they actively thrive, continuously revitalising the workplace environment around them.

Relying on a few stray desk plants won’t transform your workspace culture or environment. To unlock the human, aesthetic, and performance return of biophilic design, commercial spaces require intentional layouts, precise light levels, and specialised horticultural care.

While we aren’t lighting designers ourselves, we frequently collaborate with top-tier architectural lighting design teams. Pairing our horticultural expertise with professional lighting layouts ensures your green infrastructure receives the exact spectrum and intensity in µmol needed to maximise growth, health, and biophilic benefit — the best outcome for both people and plants.