The American Horticultural Therapy Association has two definitions of practice that support the role of a horticultural therapist. Whatever type of nature based therapy practiced, CHTN encourages everyone to join, support, and share knowledge and ideas.
Horticultural therapy is the participation in horticultural activities facilitated by a registered horticultural therapist to achieve specific goals within an established treatment, rehabilitation, or vocational plan. Horticultural therapy is an active process which occurs in the context of an established treatment plan where the process itself is considered the therapeutic activity rather than the end product.
Therapeutic horticulture is the participation in horticultural activities facilitated by a registered horticultural therapist or other professionals with training in the use of horticulture as a therapeutic modality to support program goals. Therapeutic horticulture is the process through which participants enhance their well-being through active or passive involvement in plant and plant-related activities