This final report includes two major components: a narrative describing a project at Edmonds Community College, Washington, to develop a horticultural therapy curriculum and descriptions of six courses developed or revised during the project. The narrative reports the development of a supplementary interdisciplinary certification program to train individuals already working in the horticulture and human services areas through the cooperation of the horticulture and social and human services departments. Procedures included a literature review, personal contact with authorities in the field, and community involvement at a symposium. Results of needs evaluations (of students and agencies) conducted at the symposium and a third-party evaluation are also discussed. An appendix presents the course descriptions for the new and revised courses, entitled (1) Survey of Disabling Conditions, (2) Methods in Therapeutic Teaching, (3) Horticulture Therapy, (4) Symposium in Horticultural Therapy, (5) Seminary in Horticulture Therapy, and (6) Sign Language. Each is described on a course proposal form including all or some of the following information: title, prerequisites, credits, catalog description, course objectives, required texts, and course outline. Other appendixes provide survey forms, outline of the certification program, and mailing lists. (YLB)