AHTA is a non-profit, membership-driven organization whose mission is to promote and advance the profession of Horticultural Therapy as a therapeutic intervention and rehabilitative modality through:

  • The dissemination of information relating to the principles and practices of horticultural therapy as a treatment modality.
  • The encouragement of professional growth of horticultural therapy practitioners.
  • The establishment of professional standards and a credentialing process for horticultural therapy practitioners.
  • The promotion of research related to the impact of horticultural therapy as a treatment modality.
  • The advocacy of horticultural therapy as a treatment modality to the public, the healthcare industry, the academic community, and the allied professions.
  • The promotion of horticultural therapy educational opportunities.


  • Quality of life is related to the relationship between people and plants.
  • Curiosity and attraction to nature are inherent human qualities; individuals respond positively to green plants and colorful flowers.
  • Working with plants promotes emotional, mental and physical health and well-being.