HORTICULTURAL THERAPY & THERAPEUTIC HORTICULTURE
Research Database
The Horticultural Therapy / Therapeutic Horticulture Research Database is a comprehensive, organized collection of research studies focused on the benefits, methodologies, and applications of horticultural therapy (HT) and therapeutic horticulture (TH). It serves as a resource for researchers, practitioners, educators, policymakers, and funding organizations interested in evidence-based applications of HT/TH.
Purpose & Intended Users
- Researchers – Access peer-reviewed studies, case studies, and meta-analyses to support further academic work.
- Practitioners – Find evidence-based strategies and interventions for therapeutic horticulture programs.
- Educators – Utilize research findings for curriculum development in HT/TH and related fields.
- Policymakers & Funders – Review data on program effectiveness to support policy initiatives and grant funding.
- Healthcare Professionals – Explore intersections between HT/TH and allied health disciplines such as occupational therapy, physical therapy, nursing, social work, and counseling.
How Studies Are Categorized
To enhance usability, studies are categorized using a structured tagging system. Each study is assigned tags based on:
- Program Type – Defines the nature of the intervention.Â
- Population Groups – Identifies the target demographic.
- Setting or Context – Specifies the environment in which the intervention occurs.
- Health and Wellness Outcomes – Highlights key benefits and effects.
- Allied Profession Intersections – Indicates related fields that may apply the research.
- Type of Activity – Describes specific horticulture-related interventions.
- Evidence Type – Classifies the research methodology.
- Measurement and Evaluation – Details how outcomes are assessed.
- Research Source – Identifies where the study originates.
- Access – Specifies whether the research is freely available or requires payment.
Tagging Glossary
We’ve created a Tagging Glossary to help you navigate and categorize research more efficiently. This resource ensures consistency and makes it easier to find relevant studies.
Featured Papers
The Root in Nature team has handpicked some of the best research papers and reports for you to access easily. Sign up to explore these curated resources and receive new research papers directly in your inbox each month through our Root Beat newsletter!

A Special Thank You to Dr. Diane Relf
This research database was made possible by the generous support and vision of Dr. Diane Relf, a pioneer in horticultural therapy. Her dedication to research and education has left a lasting impact on practitioners, researchers, and students. Learn more about her contributions and the special research collection in her honor.