Holobionts in the Forest Pharmacy
Yarrow Willard — Clinical & Master Herbalist, Co-Founder of Harmonic Arts
Yarrow Willard is a Clinical Herbalist and educator who inspires vitality and ecological awareness. Co-founder of Harmonic Arts and an instructor at Wild Rose College, he combines traditional wisdom and modern science to teach holistic herbalism. Known as the Herbal Jedi, Yarrow engages audiences through workshops, online courses, and a popular YouTube channel. He believes plants are not just medicine but also our teachers and allies, reflecting our potential: “Plants are not just medicine,” Yarrow says, “they are our teachers, our allies, and reflections of the potential within us all.”
YARROW WILLARD (CAN)
Master Herbalist, director @ Wild Rose College of Natural Healing
We are our own healers. There is no magic bullet; it is all about your ecosystem and how it builds your vibrancy. Interspecies connection is our medicine, and symbiosis is what this planet is about.
Summary
- Humans are holobionts—complex ecosystems existing in a symbiotic relationship with internal and external microbiomes that provide essential genetic intelligence and nutrients. - Disconnection from nature is a leading cause of modern disease; practices like forest bathing help restore the interspecies connection and mental harmony required for healing. - The "Wood Wide Web" of fungal networks facilitates nutrient sharing and communication in forests, illustrating that nature is based on mutual dependency rather than survival of the fittest. - Bacteria and viruses are ancestral partners that build immunity; many chronic health issues stem from a lack of microbial biodiversity caused by synthetic chemicals and antibiotics. - To build true resilience, prioritize seasonal, wild, and cultured foods that act as prebiotics to nurture a diverse internal ecosystem instead of relying on isolated supplements.
Article
Holobionts In The Forest Pharmacy: Symbiosis And The Wood Wide Web
At Biohacker Summit 2022 Amsterdam, Yarrow Willard Cast Health As A Story Of Relationship, Not Isolation
In a presentation that moved as easily between microbiology, forest ecology and spiritual reflection as it did between jokes and provocation, Yarrow Willard took the stage at Biohacker Summit 2022 Amsterdam and asked his audience to reconsider the most basic question of all: what, exactly, is a human being?
Willard, the clinical herbalist and educator known to many as the Herbal Jedi, offered an answer that challenged the modern fantasy of bodily independence. Humans, he argued, were not sealed, sovereign individuals but holobionts: living constellations of bacteria, fungi, viruses and human cells, bound together in a dynamic ecology of mutual dependence.
“You are an ecosystem. You are a holobiont,” Willard said during his talk, *Holobionts In The Forest Pharmacy*, delivered on Saturday, 15 October 2022, in Amsterdam, Netherlands. “Every plant, every planet, and every ecosystem is a holobiont, which is the hologenomics of co-evolution. This is our history; this is who we are.”
The Human Body As An Ecosystem
Willard’s central claim was both biological and philosophical. The body, he said, should be understood less as a machine and more as a habitat, a site of constant exchange in which microbial partners help shape immunity, metabolism and even intelligence.
“You are not a human by cell count,” he told the audience. “You are thousands of times more intelligent based on the ecosystem that lives on and in you than you are by your human cells. This is the house of who you are.”
The language was expansive, at times mystical, but the underlying idea was clear. Health, in this telling, did not emerge from domination over microbes or from the endless hunt for a miracle compound. It emerged from relationship: between gut and brain, body and forest, organism and planet.
Willard drew attention to the gut as a site of learning rather than mere digestion, describing it as a place where immunity was educated through contact with microbial life. In his framing, the body was not simply defended by the immune system. It was taught by the living communities within it.
A Rebuke To Modern Disconnection
If the body was an ecosystem, then modern life, in Willard’s account, had become an ecological catastrophe in miniature.
“The greatest disease of all time is nature deficit disorder,” he said. “Our disconnection from our ecosystem has left us starved and hungry, looking and yearning to reconnect, and yet health is all around us.”
This was one of the talk’s recurring themes: that many contemporary forms of illness were inseparable from estrangement. Estrangement from soil, from seasonal rhythms, from microbial diversity, from wild food, from silence, and from the natural systems that once shaped daily life.
Willard’s critique extended to technology too. He mocked the modern fixation on the smartphone as a “pocket God”, a handheld object of devotion that displaced both attention and reverence. In his view, the crisis was not only chemical or nutritional. It was perceptual. People were no longer living inside the world so much as skimming above it.
The Forest As Teacher
From there, the presentation widened into the forest.
Drawing on the now familiar idea of the “Wood Wide Web”, Willard described mycelial networks as the hidden infrastructure of ecological resilience. These fungal systems, he said, transfer nutrients, support plant communities and create forms of co-operation that challenged the old, brutal caricature of nature as little more than competition.
In the forest, he suggested, interdependence was not a moral aspiration. It was the operating system.
Mother trees nourished their young. Fungal networks mediated exchange. Saprophytic and mycorrhizal relationships linked species into living economies of reciprocity. Forests, in this sense, were pharmacies not because they contained isolated medicinal ingredients, but because they modelled the conditions from which health itself arose.
It was one of the more powerful inversions in the talk: the idea that mushrooms were not simply products of the forest, but participants in its architecture, perhaps even among its principal engineers.
Symbiosis Over Fear
Willard’s argument also challenged the language of microbial warfare that has long shaped public health and consumer culture. Bacteria and viruses, he said, were too often cast as invaders rather than ancestors.
“Microorganisms are not our enemies; they are our ancestors,” he said. “They are who we are created from, who we are built out of, biologically hardwired into the star stuff that we are.”
That line captured the tone of the presentation as a whole: part scientific storytelling, part ecological manifesto. He spoke of viral DNA as part of human inheritance, of microbial diversity as a condition of resilience, and of antibiotics and synthetic chemicals as forces that, while historically important, had also contributed to a dangerous thinning of the internal ecosystem.
His warning was not anti-medicine so much as anti-reductionist. The problem, as he framed it, was the belief that life could be repaired by attacking single targets while ignoring the wider field of relationships that made health possible.
Beyond The Magic Bullet
There was a consistent impatience in Willard’s talk with the culture of optimisation that often shadows the wellness world. No herb, no supplement, no conference-floor breakthrough would save anyone on its own, he insisted.
“There is no plant that is a magic bullet,” he said. “There is no substance you can find at any conference, at any talk, in anything that is a magic bullet.”
Instead, he urged a return to what he described as “the do”: the living function of the ecosystem itself, the body’s capacity to assimilate, adapt and renew in partnership with the microbial and botanical worlds around it.
That meant embracing seasonal, local and cultured foods, but also something broader. It meant learning again from wildness. It meant valuing prebiotics over simplistic supplementation. It meant replacing synthetic overload with ecological intelligence.
Forest Bathing As A Practical Ritual
For all its cosmic sweep, the presentation did not remain abstract. Willard offered a simple practice as one of the clearest routes back into relationship: Shinrin-yoku, or forest bathing.
To enter nature without a fixed goal, to notice a tree, to smell, touch, taste and linger, was for him not a lifestyle accessory but a biological corrective. It was a way to interrupt the high-frequency noise of modern life and restore what he saw as a more coherent human state.
This was not framed as romantic escapism. It was presented as medicine, or perhaps more precisely, as re-entry into the conditions under which medicine becomes possible.
A Vision Of Resilience Rooted In The Wild
Willard’s biography helps explain the shape of the talk. As co-founder of Harmonic Arts and an instructor at Wild Rose College, he has long worked at the intersection of traditional plant knowledge and modern science. His public voice has often insisted that plants are more than remedies. They are teachers, mirrors and allies.
That philosophy animated the entire presentation at Biohacker Summit 2022 Amsterdam. In Willard’s rendering, the future of resilience would not be built through further estrangement from the living world, but through a more intimate participation in it.
The message, beneath the eccentric metaphors and sweeping cosmology, was surprisingly direct. Human health could not be divorced from ecological health because the boundary between them had never truly existed.
“The system of energy exchange in the universe is universal, and it is all about symbiosis,” Willard said. “We are all interconnected, and everything is about relationship. There is no proverbial bad guy and no hunter out to get you.”
In an age fixated on control, it was a strikingly different proposition: that healing might begin not with conquest, but with remembering that we were never alone inside our own skin.
Part of Biohacker Summit 2022 Amsterdam