What the Body Remembers

How plant knowledge crossed generations and oceans

Melting ice in the Ötztal Alps released a body in September 1991 that had been frozen since roughly 3300 BCE. Hikers found him first; archaeologists followed, cataloguing a copper axe, a bow stave, a quiver of arrows, and a leather pouch. Threaded onto two leather strips among his belongings were pieces of birch polypore, a bracket fungus that grows on dead and dying birch trees across Europe and Asia.

Birch polypore is fibrous, bitter, and generally considered inedible. But laboratory analysis published in the years after the discovery found that it carries compounds active against certain parasites and bacteria, and researchers have noted that the Iceman's intestines held eggs from a whipworm infection. No inscription travelled with the fungus to explain its purpose, so its exact use remains inference rather than certainty. What is not in question is that a man crossing an alpine pass more than five thousand years ago carried a fungus for reasons that had nothing to do with hunger.

Someone, at some point long before Ötzi's lifetime, worked out that willow bark eased pain, that yarrow could slow bleeding, that a particular root settled a stomach the way food alone could not. There is no record of a first discovery. Instead there is repetition: a family returning to the same slope, the same riverbank, the same stand of trees, year after year, testing what the land offered and remembering what worked.

Learning a Single Place

Repeated visits to the same clearing or streambank allowed knowledge to accumulate over time. A single species might feed a household in one season and treat an ailment in another, its uses learned gradually rather than discovered all at once.

Animals offered hints but not instructions. A bear digging at a particular root after leaving its den, or deer browsing selectively as the weather turned, could point a forager toward something worth investigating but that only narrowed the search. People still had to determine, through trial and consequence, what was safe to eat, how it needed to be prepared, and what dose separated medicine from poison.

None of this transferred easily between regions. A remedy built around a Mediterranean shrub meant nothing in a birch forest where that plant did not grow. Knowledge of healing plants was never a universal inheritance; it was a set of answers tied to a specific ground, and moving to new ground meant starting much of the work again.

Words on Clay and Vellum

Cuneiform tablets from Mesopotamia list plant remedies among the earliest surviving medical texts. In Egypt, the Ebers Papyrus, compiled around 1550 BCE, records several hundred preparations built from ingredients such as garlic, juniper, and aloe—plants that were already old knowledge by the time a scribe committed them to papyrus. Centuries later, the first-century Greek physician Dioscorides compiled De Materia Medica, describing roughly six hundred plants along with their preparation and use. The manuscript would outlast the empire that produced it.

Monastic copyists kept that knowledge moving through the medieval centuries, transcribing herbals by hand while planting the same species in monastery gardens: sage, fennel, rosemary, and mint grown beside vegetables for the kitchen. But most households never owned a manuscript and never needed one. A garden outside the back door and a patch of nearby woodland supplied what a family required, and the knowledge of how to use them passed through households by demonstration and correction without a single word written down.

New Ground, Old Habits

Seeds crossed the Atlantic among household belongings long before they arrived as commercial stock. Chamomile, sage, and thyme arrived with immigrant households and went into whatever soil those households found. Some plants stayed inside garden fences. Others escaped cultivation and became naturalized across parts of Canada.

The land those immigrants reached already held extensive plant knowledge. Indigenous Nations had developed their own practices through generations of observation, and those traditions differed between communities, territories, and languages. They had histories of their own, older than any immigrant ship crossing.

Scandinavian immigrants settling the Canadian Prairies in the late nineteenth and early twentieth centuries carried garden habits shaped over generations in Norway, Sweden, and Denmark. Caraway and dill went into the same plots as potatoes and cabbage. Wild-gathered plants such as juniper and yarrow, familiar from home, were sought out on Prairie land where they happened to grow, while other favourites simply did not survive the climate and had to be replaced with species the immigrants had never gathered before arriving. Knowledge tied to a particular Norwegian landscape could not simply be transferred to Prairie ground. Immigrants had to learn where familiar species grew and how old preparations behaved in a different climate.

What Still Grows

Yarrow still flowers along Prairie roadside ditches. Wild mint returns each year beside Prairie creeks. And in places where a farmyard has been abandoned—the house gone, the foundation sunk into grass—chamomile sometimes still comes up in a rough patch where a garden once stood, planted by hands that are no longer there to tend it.

More than five thousand years later, the birch polypore remains threaded onto Ötzi’s leather strips. On the Prairies, chamomile still appears near abandoned farmyards, growing beyond the gardens where someone once planted it.

Further Reading

Konrad Spindler, The Man in the Ice (Harmony Books, 1994).

L. Capasso, "5300 years ago, the Ice Man used natural laxatives and antibiotics," The Lancet, 352:9143 (1998)

Dioscorides, De Materia Medica, trans. Lily Y. Beck (Olms-Weidmann, 2005)

M.L. Cameron, Anglo-Saxon Medicine (Cambridge University Press, 1993)