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Ragweed may not be all bad afterall

Ragweed pollen, which causes allergic reactions, usually starting in August, is enlarged about 2000 times by a scanning electron microscope. (Left: iStockphoto. Right: Estelle Levetin, University of Tulsa)

Ragweed is the bane of alergy sufferers everywhere. One plant can produce a billion grains of pollen in a season.

That's a billion reasons it's a pest to humans.

But a new study shows that ragweed isn't always so mean.
In fact, ragweed is rather friendly -- especially to fellow ragweed, and, oddly enough, to mushrooms.    

John Klironomos is a professor of biology at UBC Okanagan who worked on the study. He dropped by CBC Kelowna to talk about it with Daybreak host, Chris Walker.

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