Plants Can “Speak” to Each Other

Abstract

When we think about plants, we do not normally imagine them “speaking” to each other. But they do communicate—in many different ways. More than a century ago, the eminent biologist Charles Darwin suggested that plants have a brain-like structure at their root tips! In this case, Darwin’s root-brain hypothesis was wrong, but more modern research shows that plants can communicate. They speak with other plants as well as with animals and even people. They do this primarily using chemicals and sound.