Question 1

How many air-purifying plants do I need per room?

Accepted Answer

NASA's original study suggested one plant per 100 square feet. For a typical 10×12 ft bedroom, 1–2 plants is a good starting point. For living rooms, aim for 3–5 plants spread across the space for noticeable impact.

Question 2

Do air-purifying plants work during Delhi or Mumbai pollution season?

Accepted Answer

Plants help reduce indoor VOCs and CO₂, but they cannot replace an air purifier during severe AQI events (300+). Use them as a long-term support system alongside proper ventilation. They are most effective against everyday indoor pollutants like formaldehyde from furniture and benzene from paints.

Question 3

Which air-purifying plant releases oxygen at night?

Accepted Answer

Snake plant and aloe vera both release oxygen at night through CAM photosynthesis. Most other plants release oxygen only during the day. This makes snake plant and aloe vera ideal bedroom choices.

Question 4

Can air-purifying plants remove cigarette smoke or cooking fumes?

Accepted Answer

Plants can absorb some VOCs from smoke and cooking over time, but they cannot filter visible smoke or strong odours in real time. For kitchens, spider plant helps absorb carbon monoxide from gas stoves. For smoke, ventilation and air purifiers are more effective.

Question 5

Are air-purifying plants safe for pets and children?

Accepted Answer

Spider plant, areca palm, and Boston fern are non-toxic and safe for homes with pets and children. Peace lily and pothos are mildly toxic if ingested—keep them on high shelves or hanging baskets if you have curious pets or toddlers.

Question 6

Is tulsi (holy basil) an air-purifying plant?

Accepted Answer

Tulsi has antibacterial and antiviral properties and releases oxygen for about 20 hours a day, making it a strong natural air cleanser. While it wasn't part of NASA's study, Indian research supports its air-purifying benefits. It grows best outdoors or on sunny windowsills.

Air-Purifying Plants for Indian Homes: Which Plants Actually Clean Indoor Air (And How Many You Need)

Air-Purifying Plants for Indian Homes: Which Plants Actually Clean Indoor Air (And How Many You Need)