The new major textbook for Horticultural Therapy is now available purchase here.

Fundamentals of HT
All classes online & live

Class content is the same for each section. Only dates and time zones different.

Oct. 29-Nov. 1, 2020 Class Now Full!
Section I
Mountain Time Zone
(Colorado Series)

Nov. 12-15, 2020 Class Now Full!
Section II
Pacific Time Zone
(California Series)

Dec. 3-6, 2020
Section III
Eastern Time Zone

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Download PDF of 2020/2021 Schedules

Section I (CO)  Colorado series

Section II (CA)   California Series


Horticultural Therapy Methods Book

About the Editors

Horticultural Therapy Methods
Making Connections in Health Care, Human Service,
and Community Programs

Linking People and Plants

Rebecca L. Haller, HTM

Rebecca Haller, Director of the Horticultural Therapy Institute

Rebecca has practiced and taught horticultural therapy since receiving an MS in horticultural therapy from Kansas State University in 1978. Currently the director of the Horticultural Therapy Institute in Denver, Colorado, Ms. Haller delivers workshops, teaches horticultural therapy classes in affiliation with Colorado State University and provides consultation to new or developing programs.

At Denver Botanic Gardens, she designed and taught a series of professional courses in horticultural therapy, managed the sensory garden, and created programs and access for people with disabilities. She established a vocational Horticultural Therapy program for adults with developmental disabilities in Glenwood Springs, Colorado, that is still thriving after more than 20 years in operation. She has served as president, secretary, and board member of the American Horticultural Therapy Association. In 2005, she received the Horticultural Therapy Award from the American Horticultural Society. She has authored articles and chapters in the following publications: Horticulture as Therapy: Principles and Practice, Horticultural Therapy and the Older Adult Population, Towards a New Millennium in People-Plant Relationships, and The Public Garden. She is also a member of the Thrive, the American Occupational Therapy Association, the American Therapeutic Recreation Association, and the American Horticultural Society.

Christine L. Kramer, BA

Christine L. Kramer, BA
Program Coordinator, Horticultural Therapy Institute, Denver, Colorado

Christine is the horticultural therapy program coordinator at the Horticultural Therapy Institute in Denver, Colorado. She and partner, Rebecca L. Haller, HTM, co-founded the institute in early 2002 and continue to offer accredited Horticultural Therapy education to students from across the United States and abroad. Previously, she worked as the program coordinator at the Denver Botanic Garden’s Horticultural Therapy program. She has a BA in journalism from Metropolitan State College in Denver.

Ms. Kramer has written for numerous publications including OT Weekly, Mountain Plain and Garden, Green Thumb News, People-Plant Connection, AHTA News, GrowthPoint, The Community Gardener, Health and Gardens, Colorado Gardener, and Our Sunday Visitor. She was a reporter for the Denver Catholic Register newspaper for many years. She has received writing awards from the Society of Professional Journalists, the Catholic Press Association, and the Colorado Press Association.


View the recording of a recent live webinar:

Topic: Entering the Profession of Horticultural Therapy

You will learn:

  • What is horticultural therapy?
  • Where is it practiced?
  • Who does it serve?
  • How can you receive training?

View the webinar here


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