THAD is a collaborative project providing a free online database of therapeutic horticulture activities. Activities are an integral component of horticultural therapy (HT) and therapeutic horticulture (TH) programs. THAD uses three primary categories to present and organize activities: Activities, Goals, and Populations.
UCLA Extension’s Horticultural Therapy course series is designed to serve both novices and professionals. It is approved and accredited by the American Horticultural Therapy Association (AHTA), and offers students a foundation in horticultural therapy that meets the standards of the professional advocacy group.

The Horticultural Therapy / Therapeutic Horticulture Research & Readings 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.