The engagement of a client in horticultural activities facilitated by a trained therapist to achieve specific and documented treatment goals promoting physical, cognitive, emotional and social well-being. The horticultural therapist designs and implements activities that use the cultivation of plants and interactions with nature as a medium for therapy.

A purposeful process in which people engage in plant-based activities, by a trained professional, to improve their well-being. Unlike formal horticultural therapy, it may not be part of a structured treatment plan. The focus is on using active participation in gardening and nature-related tasks to support physical, cognitive, emotional, and social health.