Do houseplants actually improve air quality?
Most of us have been spending a lot more time at home these past couple of years, prompting us to ask questions about the quality of the indoor air we breathe. Pre-COVID reports show that we Brits spend more than 90 per cent of our time indoors , where levels of some toxins can be up to five times greater than they are outdoors. The internet is full of claims that houseplants can help, with just about every wellbeing site boasting its own top-10 rundown of the most powerful air-purifying plants. But is there any truth to the claims? Unfortunately, not much. Most of the articles, if they cite any evidence, point to a NASA study from 1989 . Back then, scientists were investigating plants’ ability to remove harmful chemicals called volatile organic compounds (VOCs) from the air of sealed environments such as space stations. In our homes and offices, sources of VOCs include paints, varnishes, furniture, carpets and printers. The study found ...