Plants, despite their immobility, exhibit remarkable sensitivity to their environment, communicating above and below ground in response to stimuli. Lacking traditional sensory organs, they employ diverse mechanisms for information exchange. Volatile organic compounds (VOCs) serve as aboveground signals, alerting neighbouring plants to upcoming threats. In turn, exposed plants trigger defensive compound production. Belowground, the Common Mycorrhizal Network (CMN) facilitates nutrient and defence signal exchange. This article explores above and below ground plant communication, elucidating their complex interaction and response mechanisms.