Shh, plants are talking ?

Not definitive yet, but still flummoxing....

http://www.rawstory.com/rs/2013/05/08/scientists-plants-communicate-with-one-another-through-microscopic-sound-waves/

http://www.biomedcentral.com/imedia/1756757526887438_article.pdf?random=50642

Most likely a spectroscopic reflection, like red mulch for tomatoes, or flower colors, but who knows?

and these guys say the fungi are the ones talking

http://www.rawstory.com/rs/2013/05/10/plants-use-underground-fungus-network-send-distress-signals-to-each-other/