Ecotherapy is a broad term for therapeutic practices that use direct contact with nature to support mental and physical health. It’s rooted in a simple idea: humans are part of natural ecosystems, not separate from them, and reconnecting with the natural world can aid in healing. Ecotherapy draws from ecopsychology, a branch of psychology that views a person’s wellbeing in the context of the health of the Earth and its ecosystems.
How Nature Affects Your Brain and Body
Two well-established theories explain why spending time in nature seems to help people feel better. The first, Attention Restoration Theory, proposes that the constant demands of modern life deplete your capacity to focus. Natural environments restore that capacity because they engage your attention gently, without the urgency of traffic, screens, or deadlines. The second, Stress Reduction Theory, describes how nature activates your parasympathetic nervous system, the branch responsible for calming you down. This lowers stress hormones and reduces the state of physiological alertness that comes with chronic anxiety.
These aren’t just theoretical claims. Field experiments across 24 forests in Japan measured the effects of forest bathing (called shinrin-yoku) and found that cortisol, the body’s primary stress hormone, dropped by roughly 13 to 16 percent after time spent in forest settings compared to urban ones. Systolic blood pressure fell by about 2 percent, and diastolic blood pressure showed similar decreases. Research has also linked lower cortisol levels to improved immune function, specifically higher activity of natural killer cells, a type of white blood cell that helps your body fight infections and abnormal cell growth.
There’s also evidence that green spaces support healthy brain development in children by providing opportunities for discovery, creativity, risk-taking, and a sense of mastery, all of which influence cognitive and emotional growth.
The 120-Minute Threshold
One of the most practical findings in this field comes from a large study of nearly 20,000 adults in England. People who spent at least 120 minutes per week in nature were significantly more likely to report good health and high wellbeing compared to those with no nature contact. Below that two-hour mark, the benefits weren’t statistically meaningful. Spending just an hour a week, for instance, didn’t produce better outcomes than spending zero time outdoors.
The benefits peaked somewhere between 200 and 300 minutes per week, with no additional gain beyond that. And it didn’t matter how you divided the time. One long weekend walk worked just as well as several shorter visits spread across the week. The key was simply accumulating at least two hours of total nature contact.
Common Types of Ecotherapy
Ecotherapy is an umbrella term that covers a range of structured and informal practices. Some of the most widely used include:
- Horticultural therapy: Gardening activities guided by a trained facilitator, often used in rehabilitation settings, hospitals, and community programs. Growing plants provides a sense of purpose and tangible accomplishment.
- Forest bathing (shinrin-yoku): Slow, intentional walks through wooded areas with an emphasis on sensory awareness rather than physical exertion. Originated in Japan in the 1980s and now practiced worldwide.
- Wilderness therapy: Structured outdoor expeditions, often lasting days or weeks, that combine group therapy with backcountry activities like hiking and camping. Frequently used with adolescents and young adults dealing with behavioral or emotional challenges.
- Animal-assisted therapy: Interactions with animals, whether horses, dogs, or farm animals, in a therapeutic context. The presence of animals can reduce anxiety, encourage social engagement, and provide nonverbal connection.
- Nature-based mindfulness: Meditation and grounding exercises performed outdoors, combining the benefits of mindfulness practice with natural sensory input.
Some ecotherapy happens in clinical settings with licensed therapists. Other forms are more informal: community garden projects, guided nature walks led by trained facilitators, or conservation volunteering programs designed to improve participants’ mental health through meaningful outdoor activity.
Who Practices Ecotherapy
Ecotherapy is not a licensed profession on its own. There is no single required credential or standardized certification. Instead, it’s typically practiced by licensed mental health professionals (therapists, social workers, psychologists) who incorporate nature-based techniques into their existing clinical work. Some training programs, like the ecotherapy certificate offered by Pacifica Graduate Institute, provide continuing education credits for licensed clinicians but do not confer a separate license or degree. The program is also open to educators, coaches, and community workers.
This means the field is relatively open. If you’re looking for ecotherapy from a qualified professional, the most important thing is that the practitioner holds a valid mental health license and has additional training in nature-based approaches. For less clinical forms, like guided forest bathing or community gardening programs, formal licensure is less relevant, but experience and training still matter.
What Ecotherapy Looks Like in Practice
A typical ecotherapy session varies widely depending on the type. A horticultural therapy session might involve 60 to 90 minutes of planting, weeding, or harvesting in a therapeutic garden, with a facilitator guiding reflection and conversation throughout. A forest bathing session often lasts two to three hours and involves walking slowly through a wooded area, pausing to notice sounds, smells, textures, and light. There’s usually no particular destination or fitness goal.
In more intensive formats like wilderness therapy, participants spend extended periods outdoors, sometimes weeks, combining daily group therapy sessions with practical survival skills and physical challenges. These programs are typically residential and used for more serious mental health or behavioral concerns.
For people in cities with limited access to forests or wild spaces, ecotherapy principles still apply. Urban parks, community gardens, rooftop green spaces, and even indoor interactions with houseplants or natural light can serve as starting points. The core idea is deliberate, attentive engagement with the natural world, not necessarily a trek into the backcountry. Research on the 120-minute threshold, for instance, defined “nature” broadly enough to include urban green spaces.
Conditions It May Help With
Ecotherapy is used alongside conventional treatment for a range of mental and physical health conditions. Depression and anxiety are the most commonly studied, and the stress-reduction mechanisms described above explain why: lowering cortisol, calming the nervous system, and restoring the ability to focus all directly counter the physiological patterns seen in these conditions.
It’s also used in recovery from trauma, grief counseling, addiction treatment, and programs for people with chronic physical conditions where stress management plays a role. For children and adolescents, nature-based programs have been used to address attention difficulties, behavioral issues, and social skill development. The biophilia hypothesis suggests that children in particular benefit from unstructured time in green spaces because it supports cognitive flexibility, creativity, and emotional regulation in ways that indoor environments don’t replicate as effectively.
Ecotherapy is generally used as a complement to other treatments rather than a standalone replacement. Its strength lies in providing a low-barrier, accessible way to support wellbeing that most people find enjoyable rather than clinical, which can make it easier to sustain over time.