9 Surprising Discoveries About How Trees Communicate Underground

7. Mother Trees as Communication Hubs

Research has revealed that the largest, oldest trees in a forest, often called "mother trees" or "hub trees," serve as central communication nodes in underground networks, functioning much like major internet servers that coordinate information flow across vast networks. These ancient giants, some of which may be hundreds of years old, maintain connections with dozens or even hundreds of other trees through their extensive root systems and fungal partnerships. Mother trees possess the most developed and complex fungal networks, allowing them to serve as information brokers, resource distributors, and community coordinators for entire forest sections. Studies using network analysis techniques borrowed from computer science have shown that removing mother trees from a forest dramatically reduces the communication efficiency of the entire network, often leading to increased mortality among younger trees and reduced forest resilience. These hub trees actively manage resource distribution, often sending carbon, nutrients, and water to struggling seedlings and younger trees, particularly their own offspring. They also serve as early warning centers, using their extensive sensory networks to detect environmental changes and threats before smaller trees, then broadcasting this information throughout their networks. Research has shown that mother trees can recognize their own genetic offspring and provide them with preferential treatment, but they also support unrelated trees when doing so benefits the overall forest community. The loss of these communication hubs, whether through logging, disease, or natural aging, can fragment forest networks and reduce the survival rates of remaining trees.