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Research shows plants improve air quality

New studies from the University of Technology Sydney (UTS) has indicated plants can improve indoor air quality, and the size of the pot or plant does not matter above 200 mm.

"We have found that a plant in a 200 mm pot is as effective as one in a 250 mm or 300 mm in removing volatile organic compounds (VOCs) and it seems that any plant will perform as well as others," says adjunct professor Margaret Burchett from UTS.

"People do not realise that in Australia in urban areas, people spend 90 per cent of their time indoors and the quality of indoor air is now more important than ever. Our studies and those from overseas confirm that our natural air filters - pot plants - can make a real difference to maintaining air quality and directly improving the well-being of people."

The studies looked at different varieties of plants and different pot and plant sizes and their uptake of the different VOCs which would commonly be found in indoor air.

"The whole plant system is acting as nature's air filter. The micro-organisms need a healthy plant and root system to grow and different ones absorb different gases that are toxic to us. As well, their role in removing CO2 from the air and adding oxygen means that they are the greenest way of improving indoor air quality," Burchett says.

The Green Building Council now awards two points towards Green Star ratings for indoor plant installations.

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  • Hi Stephanie, Good article and a hot topic too. It would be great to see a more sustainable method of indoor plant installations. Mark

    Mark Morrison | 24 November 2009 at 7:55

  • This research was started a decade ago and has been in the public arena for years. The research was done by Dr Ronald Wood. Dr Wood has presented many papers on his innovative technology and has liased with NASA and other international agencies in using indoor plants to clean the air we breathe. Dr Wood's web site is above. WHo am I, well I'm Dr Wood's littel brother. Cheers, John Wood

    John Wood | 24 November 2009 at 7:56

  • will be borrowing this post for Garden Beet's blog - with indoor plants being predicted as part of the future garden this research may get more and more coverage! oh and by the way woolly wally pockets are a sustainable way of planting on indoor walls - made from recycled plastic bottles and help to conserve water

    Garden Beet | 1 February 2010 at 10:48

  • will be borrowing this post for Garden Beet's blog - with indoor plants being predicted as part of the future garden this research may get more and more coverage! oh and by the way woolly wally pockets are a sustainable way of planting on indoor walls - made from recycled plastic bottles and help to conserve water.

    Garden Beet | 22 February 2010 at 11:22

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