AHTA Accredited Certificate Programs

What is an AHTA Accredited Certificate Program?

An AHTA Accredited Certificate Program is a college-level educational program that offers the equivalent of nine (9) semester credits in horticultural therapy coursework.  The AHTA accredited certificate programs provide a foundation in the theory and application of horticultural therapy for diverse populations.

An AHTA Accredited Certificate Program is one that has applied for and received accreditation status by the American Horticultural Therapy Association. The AHTA Certificate Program must maintain accreditation based on the standards set by the Association.

Accreditation ensures that horticultural therapy certificate programs meet nationally endorsed standards in the profession. Certificate programs accredited by AHTA offer all nine (9)-semester credit hours within their educational program. 

An AHTA Accredited Certificate Program provides course content that fulfills the requirements for professional registration with the American Horticultural Therapy Association. An AHTA Accredited Certificate Program may be offered as a component of an academic degree program to fulfill the requirements of a degree in horticulture with a concentration in horticultural therapy. To meet the requirements for professional registration with the American Horticultural Therapy Association, horticultural therapy coursework completed as part of the certificate program, independent of bachelor’s/master’s degree, must be from an AHTA Accredited Certificate Program.

How to become an AHTA Accredited Certificate Program?  Read more.

AHTA Accredited Certificate Programs

The following certificate programs have been accredited by the American Horticultural Therapy Association.  For current certificate program schedules, visit the program website or reference the AHTA accredited horticultural therapy course schedule.

Chicago Botanic Garden
Main Contact:    Adult Education Department
Email:                 [email protected]
Phone:               (847) 835-8293

Address:           Adult Education Department
                         Chicago Botanic Garden
                         1000 Lake Cook Road
                         Glencoe, IL 60022

Visit the website for more information.


Delaware Valley University
Main Contact:   Nancy A. Minich, HTR, RLA, ASLA
Email:                [email protected]
Phone:               (215) 297-0681 

Address:        Department of Landscape Architecture and Environmental Sciences
                        700 E. Butler Avenue
                        Doylestown, PA  18901

Visit the website for more information.


Horticultural Therapy Institute (HTI)
Main contact:  Christine Capra. Program Manager
Email:              [email protected]
Phone:             (303) 388 0500

Address:           Horticultural Therapy Institute
                          P.O. Box 461186
                          Denver, CO  80246

Visit the website for more information.


New York Botanical Garden
Main contact:   Lisa Whitmer, DirectorAdult Education Department
Email:                [email protected]
Phone:               (718) 817 8595

Address:          Adult Education Department
                          The New York Botanical Garden
                         Watson Building, Room 306
                          2900 Southern Boulevard
                          Bronx, NY  10458-5126

Visit the website for more information.


Portland Community College
Main contact:  Jan Abushakrah, PhD
Email:               [email protected]
Phone:             (971) 722 4077

Address:         Gerontology Department
                        PCC - Sylvania Campus - SS1
                        12000 SW 49th Avenue
                         Portland OR 97219

Visit the website for more information


Rutgers University
Main contact:   Gary Altman PhD, CRC, HTR
Email:                [email protected]
Phone:               (848) 932-6321

Address:          Department of Plant Biology and Pathology
                          School of Environmental and Biological Sciences
                          Rutgers, The State University of New Jersey
                          59 Dudley Road
                          New Brunswick, NJ  08901-8520

Visit the website for more information.


Temple University
Main contact:  Peg Schofield, MA, HTR [email protected]
Email:              [email protected]
Phone:             (215) 777 9090

Address:        Temple University - Ambler Campus
                        Department of Landscape Architecture & Horticulture
                        580 Meetinghouse Road
                        Ambler, PA 19002 

Visit the website for more information.