About the American Horticultural Therapy Association

Advancing the practice of horticulture as therapy

The American Horticultural Therapy Association is the only US organization committed to promoting and developing the practice of horticultural therapy as a unique and dynamic human service modality. A 501(c)(3) nonprofit, AHTA advocates on behalf of the professional interests of horticultural therapy practitioners and strives to increase beneficial outcomes for participants, host facilities, researchers, and educators.

Originally formed in 1973 as the National Council for Therapy and Rehabilitation through Horticulture, the organization adopted its current name in 1987. Throughout its history, AHTA has sustained its founders’ vision to expand and advance the practice of horticultural therapy.

Today, AHTA defines and encourages the pursuit of outstanding standards of practice, disseminates critical knowledge across diverse constituent audiences, and recognizes and promotes excellence in clinical, professional, educational, and research achievement.

Membership is comprised of individuals and organizations from throughout the U.S., Canada, Japan, and beyond. To learn more about AHTA, its initiatives, resources, and benefits, please explore this website and visit the Membership Benefits page.

View the Strategic Plan

DEI Statement

The American Horticultural Therapy Association Board of Directors acknowledges the racism and pain that has recently triggered a wave of protest across the country. The AHTA stands united against any form of racism, discrimination, and injustice. We admire and respect the generous work of our Black colleagues. The plants we use in our profession are powerful symbols of community and diversity. The AHTA is committed to ensuring all our diversity and inclusion goals align with our Code of Ethics. As we continue our mission to encourage the pursuit of outstanding standards of practice and disseminate critical knowledge across diverse constituent audiences, we strive to make the pursuit of horticultural therapy equitable, broadly accessible, and universally welcoming. We acknowledge the importance of examining what may stand in the way of becoming a more inclusive field, as diverse as the populations we proudly serve.

Why Is the American Horticultural Therapy Association Important?


  • Provides a national voice and presence for horticultural therapy
  • Works for validity and advancement of the profession
  • Creates awareness of horticultural therapy through National HT Week
  • Is the most effective source of information about horticultural therapy
  • Can monitor current trends in the profession and other allied professions
  • Can reach a wide variety of professions and professional contacts, including healthcare
  • Ability to fundraise on behalf of the Association and the profession
  • Maintains professional registration standards
  • Is positioned to pursue accreditation for HT professionals
  • Defines and promotes standards of practice and ethics
  • Has an international presence
  • Promotes horticultural therapy through strength in numbers


  • Registers practitioners at HTR level
  • Advertises career opportunities (jobs/internship positions)
  • Offers a user-friendly and expanded website that includes a members’ section
  • Offers awards that publicize and recognize programs and individuals
  • Communicated with members through the AHTA newsletter, Board Bulletin, and a
  • forum on LinkedIn


  • Creates standards for internships and intern supervisors
  • Accredits, supports, and monitors horticultural therapy certificate programs
  • Publishes the Journal of Therapeutic Horticulture
  • Offers an annual conference
  • Encourages networking among members and regional groups
  • Is the major contact for educational institutions nation-wide
  • Advises international programs in horticultural therapy