Since it was conceived by an ad agency to promote anti-bullying (and furniture giant IKEA) there's a fair chance it wasn't the most scientifically valid experiment ever conducted.
Mythbusters ran their own test in the past and found that both insulting and being kind to plants stimulated them more than allowing them to grow in silence, but they liked death metal even more (their conclusion was that the basic theory of sound vibrations mildly stimulating growth was plausible). There's more serious research going on into plant bioacoustics: the theory some plants have evolved to respond to specific sound stimuli
Since it was conceived by an ad agency to promote anti-bullying (and furniture giant IKEA) there's a fair chance it wasn't the most scientifically valid experiment ever conducted.
Mythbusters ran their own test in the past and found that both insulting and being kind to plants stimulated them more than allowing them to grow in silence, but they liked death metal even more (their conclusion was that the basic theory of sound vibrations mildly stimulating growth was plausible). There's more serious research going on into plant bioacoustics: the theory some plants have evolved to respond to specific sound stimuli