While there are no specific unions for this profession, horticultural therapists can join professional organizations such as the American Horticultural Therapy Association, which provide certification, accredits certificate programs in horticultural therapy, and offers continuing education opportunities.
- 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