"Neurologist and author Oliver Sacks (July 9, 1933–August 30, 2015) explores in a lovely short essay titled “Why We Need Gardens,” found in Everything in Its Place: First Loves and Last Tales (public library) — the wondrous posthumous collection that gave us Sacks on the life-altering power of libraries.
As a writer, I find gardens essential to the creative process; as a physician, I take my patients to gardens whenever possible. All of us have had the experience of wandering through a lush garden or a timeless desert, walking by a river or an ocean, or climbing a mountain and finding ourselves simultaneously calmed and reinvigorated, engaged in mind, refreshed in body and spirit. The importance of these physiological states on individual and community health is fundamental and wide-ranging. In forty years of medical practice, I have found only two types of non-pharmaceutical “therapy” to be vitally important for patients with chronic neurological diseases: music and gardens.
Having lived and worked in New York City for half a century — a city “sometimes made bearable… only by its gardens” — Sacks recounts witnessing nature’s tonic effects on his neurologically impaired patients: A man with Tourette’s syndrome, afflicted by severe verbal and gestural tics in the urban environment, grows completely symptom-free while hiking in the desert; an elderly woman with Parkinson’s disease, who often finds herself frozen elsewhere, can not only easily initiate movement in the garden but takes to climbing up and down the rocks unaided; several people with advanced dementia and Alzheimer’s disease, who can’t recall how to perform basic operations of civilization like tying their shoes, suddenly know exactly what to do when handed seedlings and placed before a flower bed.
I cannot say exactly how nature exerts its calming and organizing effects on our brains, but I have seen in my patients the restorative and healing powers of nature and gardens, even for those who are deeply disabled neurologically. In many cases, gardens and nature are more powerful than any medication.
Art by Violeta Lopíz and Valerio Vidali from The Forest by Riccardo Bozzi
More than half a century after the great marine biologist and environmental pioneer Rachel Carson asserted that “there is in us a deeply seated response to the natural universe, which is part of our humanity,” Sacks adds:
Clearly, nature calls to something very deep in us. Biophilia, the love of nature and living things, is an essential part of the human condition. Hortophilia, the desire to interact with, manage, and tend nature, is also deeply instilled in us. The role that nature plays in health and healing becomes even more critical for people working long days in windowless offices, for those living in city neighborhoods without access to green spaces, for children in city schools, or for those in institutional settings such as nursing homes. The effects of nature’s qualities on health are not only spiritual and emotional but physical and neurological. I have no doubt that they reflect deep changes in the brain’s physiology, and perhaps even its structure."