the nasa guide to air filtering houseplants

(source: lovethegarden.com)

Houseplants are not something you would typically associate with NASA, but in the late ‘80s the US government agency joined forces with the Associated Contractors of America (ALCA), to determine the most effective indoor plants for removing toxic agents from the air.

The study, led by Dr. B. C. Wolverton, found that some plants were effective at filtering out the likes of benzene, ammonia and formaldehyde from the air, helping to neutralise the effects of sick building syndrome.

The aptly named ‘Florist’s Mum’ proved most effective, alongside the Peace Lily, both shown to filter out amounts of benzene, formaldehyde, trichloroethylene, xylene, toluene and ammonia.

While the research does date back over 25 years ago, the findings are have stood the test of time, and are regarded as the most comprehensive and accurate results to date.

For optimal air-filtering, NASA recommends placing at least 1 plant per 100 square feet (9 square metres) of home or office space.

Please note: Several of these plants are known to be toxic to cats, dogs and other pets. If you are a pet owner, please do check the toxicity of plants before introducing them to your home.