RESEARCH

Horticultural Therapy: A Pilot Study on Modulating Cortisol Levels and Indices of Substance Craving, Posttraumatic Stress Disorder, Depression, and Quality of Life in Veterans

Detweiler, M.B., Self, J.A., Lane, S. et al. (2015). Horticultural therapy: A pilot study on modulating cortisol levels and indices of substance craving, posttraumatic stress disorder, depression, and quality of life in veterans. Altern Ther Health Med., 21(4), 36-41.

Program Types: Therapeutic

Population Groups: Military/Veterans

Setting or Context: Community Gardens, Public/Botanical Gardens

Health and Wellness Outcomes: Enhanced Emotional Well-being, Increased Social Engagement & Skills, Improved Quality of Life

Allied Profession Intersections: Behavioral Therapy

Type of Activity: Outdoor Gardening, Forest/Natural Area Immersion

Evidence Type: Case Studies, Qualitative Research

Measurement and Evaluation: Metrics for Mental Health, Program Effectiveness

Access: Free

Print Form

Summary

A retrospective study examined self-initiated horticultural therapy (HT) among veterans in a 28-day inpatient Substance Abuse Residential Rehabilitation Treatment Program (SARRTP) at a Veterans Affairs Medical Center. 50% of 56 veterans voluntarily participated in gardening, engaging in passive (relaxing, observing plants) and active (watering, weeding, harvesting) activities. Veterans described the garden as a “safe haven” and reported feeling “calm,” “serene,” and “refreshed” after spending time in the garden.

Despite no formal intervention, veterans sustained the program for two years post-study, demonstrating the therapeutic power of autonomy in recovery. Prior research also linked HT with reduced cortisol levels, improved mood, and lower alcohol cravings, highlighting its potential as an evidence-based complementary therapy for veterans overcoming substance abuse and PTSD

Link

Other Recommended Research

‘The nourishing soil of the soul’: The role of horticultural therapy in promoting well-being in community-dwelling people with dementia

Gardening can help people with dementia feel more active, connected, and less lonely by improving their physical and mental well-being. The article highlights the need for more accessible gardening programs in the community to support social engagement and a better quality of life.

“Connecting people and the earth”: the occupational experience of people with different capabilities participating in an inclusive horticultural social enterprise

This thesis examines how a gardening-based social enterprise helps people of all abilities by providing meaningful work, social connections, and a sense of belonging. While it highlights the benefits of inclusion and community participation, it also points out challenges like funding and governance that need to be addressed for long-term success.

‘Into the Wild’: A meta-synthesis of talking therapy in natural outdoor spaces

This Meta-synthesis highlights the benefits of holding therapy sessions in nature, which can reduce stress, improve mood, and enhance emotional well-being. While outdoor therapy offers unique advantages, such as greater openness and connection with nature, it also requires careful consideration of client suitability and professional training.