This agricultural curriculum guide on horticulture for secondary students is one of six developed for inservice teachers at Marianas High School in Saipan. The guide provides the rationale, description, goals, and objectives of the program; the program of studies and performance objectives by levels; samples of lesson plans for effective delivery of instruction; and a listing of references. Concepts covered include orientation to horticulture, terminology, plant classification, horticulture mechanics, pest control, plant propagation, field preparation, and soils. Classroom activities are combined with gardening experiences. Appended materials include lesson plans, student activities, and tests. (CT)