NEVER! Theories that plants benefit from conversation dates to 1848, when professor Gustav Fechner published the book Nanna (Soul-life of Plants). The idea is popular, & has spawned several more books & even an album, titled "Music to Grow Plants By." Will crooning compliments to your ficus really have any effect on its growth? Chime in with opinions on Facebook: www.facebook.com/IvyThymeDesign