Environment The Talk of Trees September 12, 2018 0 Comment jweeks read How Trees Secretly Talk to Each Other in the Forest | National Geographic What do trees talk about? In the Douglas fir forests of Canada, see how trees “talk” to each other by forming underground symbiotic relationships—called mycorrhizae—with fungi to relay stress signals and share resources with one another. https://www.youtube.com/watch?v=7kHZ0a_6TxY