While there are no specific unions for this profession, horticultural therapists can join professional organizations such as the American Horticultural Therapy Association (AHTA), which provides certification, accredits certificate programs in horticultural therapy, publishes the Journal of Therapeutic Horticulture and AHTA Magazine, and offers continuing education opportunities. Gardening organizations include the National Gardening Association, Garden Club of America, and the American Community Garden Association.
- Aromatherapists
- Ayurvedic Doctors and Practitioners
- Biofeedback Therapists
- Chiropractors
- Creative Arts Therapists
- Herbalists
- Holistic Physicians
- Homeopaths
- Hypnotherapists
- Kinesiologists
- Massage Therapists
- Music Therapists
- Myotherapists
- Naturopaths
- Nurse-Midwives
- Oriental Medicine Practitioners
- Recreational Therapists
- Reflexologists