RESEARCH

Horticultural Interventions May Reduce Adults’ Depressive Symptoms: A Systematic Review of Randomized Controlled Trials

Horticultural therapy may significantly reduce depressive symptoms in adults, offering a natural and effective complementary treatment through structured plant-based activities.

Program Types: Therapeutic

Population Groups: Mental Health Challenges/Trauma

Health and Wellness Outcomes: Improved Mental Health

Type of Activity: Sensory Stimulation, Indoor Plant Care, Outdoor Gardening, Nature-Based Arts & Crafts, Plant Propagation, Growing Plants from Seed

Evidence Type: Meta-Analyses/Systematic Reviews

Measurement and Evaluation: Metrics for Mental Health

Access: Paid

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Summary

A systematic review of 20 randomized controlled trials found that engaging in horticultural activities, such as planting and caring for plants, can significantly reduce depressive symptoms in adults. Most studies showed moderate to large improvements when horticultural interventions were combined with usual care, with participants twice as likely to experience a 50% reduction in symptoms compared to those receiving standard treatment alone.

These findings suggest that horticultural therapy is a safe and effective complementary intervention, with minimal adverse effects and high participant adherence. While results are promising, further research is needed to explore its effectiveness across different populations and settings, particularly among younger individuals.

Link

Rosa, C. D., Chaves, T. S., Collado, S. et al. (2023). Horticultural interventions may reduce adults’ depressive symptoms: A systematic review of randomized controlled trials. Journal of Environmental Psychology, 102112.

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