Organic agriculture (OA) is an ecological, economic and social system that has been in the spotlight to replace and reduce the adverse consequences of conventional agriculture (CA) and achieve sustainable agriculture. The future of OA depends heavily on the knowledge of producers. Accordingly, the current research is based on the Borich model and a survey method using a questionnaire, to examine the existing knowledge and needed by Damavand gardeners to produce organic apples. Thus, using Cochran’s formula, a sample of 158 gardeners were selected and interviewed by simple random sampling method. The results showed that in the planting stage, most of the respondents had very poor and weak level of knowledge, in the growing stage and the harvest the less than needed average level of knowledge to produce organic apples. However, this need decreases with increasing issues such as level of education, use of information resources, level of cultivation and work experience. Finally, based on the Borich model, priority educational issues were identified to bridge the knowledge gap in order to produce organic apples in the planting, growing and harvesting stages.