The idea of trees communicating actually started with a book written in 1973 called “The Secret Life of Plants.” This book brought to life how plants can immediately react to what’s going on in their environment. They found that the plants react very differently to negative and positive people.
The concept of communication among trees takes this even further. This research over the past few decades suggests that nature has developed an intricate and complex system of communication.
Now, there is another piece that’s being added where we can be a part of the communication process. This research comes from the HeartMath Institute which is a pioneering organization that has been investigating the role of the heart's electromagnetic field and its interactions with other people and the environment for decades. They are now including trees in this research.
Before I explore their research, let’s look at one of the most well-known and well-documented networks through which trees exchange information, which has been labeled the Wood Wide Web. This WWW is a term used to describe the underground mycorrhizal fungal networks that connect tree roots across vast areas, facilitating the transfer of nutrients, water, and information between trees.
The mycorrhizal network works through symbiosis, where fungi connect to tree roots and form a web-like structure. This allows trees to exchange vital resources. For instance, older trees can send nutrients to younger or weaker trees through these fungal networks, ensuring their survival. Additionally, when one tree is attacked by pests or diseases, it may release certain chemical signals into the network that alert nearby trees to bolster their defenses.
Trees are also known to release chemical signals into the air and soil as a form of communication. When one tree is attacked by insects or herbivores, it can release specific volatile organic compounds (VOCs) that function as a warning signal to nearby trees. This signal prompts nearby trees to activate their own defenses, such as producing bitter-tasting compounds or releasing chemicals that attract predators of the pests.
While that’s how trees respond to each other, the next question is how do we get involved in this process?
This is where the HeartMath Research comes into play.
The HeartMath Institute has developed a new technology that reads the electrical signals in trees and the surrounding earth. Then, it feeds those signals to the cloud, where they are processed and displayed. This new technology allows the researchers to "listen" to what they are calling nature’s hidden language. This is actually an extraordinary step toward deepening our understanding of the interconnectedness of all life.
What the researchers did was to set up 64 live "sensor trees" which were actively gathering data in real time.
The next step was to gather, analyze, and interpret the data from the trees and to start to comprehend the messages the trees were sharing with us.
As part of their research (which is where we get involved), the HeartMath Institute team created an experiment to explore whether sending heart-focused love could influence a tree’s electrical activity.
They had a group of 8 people send love and appreciation to one of 3 Sugar Gum Maple Trees for 10 minutes each day over six consecutive days. Participants sat in chairs about 10 15 feet from the tree.
The results were remarkable – the tree being sent the love showed an increased amplitude in its circadian rhythm, while the other 3 control trees did not change, suggesting the tree responded to the focused heart energy of the participants.
This may begin to explain why the concept of "forest bathing," or shinrin-yoku in Japan, which encourages people to spend time in forests for its healing benefits, may have a basis in these types of electromagnetic interactions.
While spending time in nature, especially in forests, may expose us to these energy fields, it could potentially lead to improved health and well-being by harmonizing our own electromagnetic fields with the natural environment.
So…it may be time for us to talk nice to all of nature that’s around us as they seem to be listening and talking back to us. We just need to learn to listen.
(Reported HeartMath Blog 3/20/25)