Standards of Practice

In 1993, Dr. Richard Mattson, Jeonne Merkle, Lori Parrett, and Tina Waliczek published "The Proposed Horticultural Therapy Standards of Practice" in the Journal of Therapeutic Horticulture, Volume VII. The document was updated by the AHTA Credentialing Work Team and adopted in March 2015 as the AHTA Standards of Practice for Horticultural Therapy. The Standards complement the AHTA Code of Ethics and describe expectations of professional conduct and delivery of horticultural therapy service. The Standards are effective June 1, 2015, and apply to all professionally registered horticultural therapists.