The aim of this book is to analyze the management of phytosanitary products through the roles of the players involved and the phytosanitary practices of market gardeners. Data was collected through direct observation, documentary research and semi-structured interviews. In addition, thematic content analysis was chosen as the data analysis method. The results of the study show that the phytosanitary practices of market gardeners are not under control, and the management of phytosanitary products is marred by a number of dysfunctions: the lack of border controls on phytosanitary products, the lack of collaboration between stakeholders, and the management of prohibited products.