Trees Communicate with Each Other

It might sound like science fiction, but it's been shown that trees communicate with each other in a forest. The world-renowned researcher who studies this phenomena is Dr. Susan Simard at the University of British Columbia's Department of Forest & Conservation Sciences. 
Her studies have uncovered an underground web of fungi which connect the trees and plants in an ecosystem. This mutual relationship or symbiosis shares the forests' resources, allowing the entire system of trees and plants to flourish. 
Dr. Simard found that webs of mycorrhizal fungi  have a mutually beneficial relationship with trees through their roots. Her microscopic experimentation shows that these fungi move carbon, water and nutrients between trees, depending upon their needs.
The saying, "not being able to see the forest for the trees" has some relevance in our experience in the wonderful stands of cedar, fir and hemlock in BC's coastal forests. Visit the Morrell Nature Sanctuary to walk in the forest. 
To see and hear more about Dr. Simard's fascinating research, see the YouTube video, How Trees Talk to Each Other.