This combination teaching guide and student workbook, the first in a five-volume series (see note), presents an approach to teaching horticulture for handicapped students. The guide discusses a functional approach to modifying agriculture programs to accomodate cognitive, affective, and psychomotor (CAP) domain handicaps. The discussion centers on categories to consider when modifying a course, the CAP model of instruction which includes assessment, possible teaching techniques, and suggested change actions, to alleviate handicapping conditions once the limits of a dysfunction are known. General comments on how to modify a program are also included. The workbook includes teacher instructions and photographs accompanying the seven basic tasks presented for step-by-step learning by doing. Tasks include a three-piece candle arrangement, cutting and dipping foam, corsage making, and using a floral stemming machine. Appendixes contain data on part-time and seasonal employment, employment and education needs in Wisconsin, references, and a list of U.S. universities that offer horticulture therapy programs. (CP)