Various phytosanitary treatments are used globally to ensure biosecurity for borders, whilst maintaining public health and safety in the consumption of fruits and vegetables. However, public health literacy of phytosanitary treatments is still low. Furthermore, little is known of the literacy on important information gatekeepers, such as business-to-consumer (B2C) stakeholders. This study investigates the health literacy of phytosanitary treatments by B2C stakeholders, and the subsequent positioning marketing narratives as an outcome of such literacy. We use health literacy as a theoretical lens for classifying different strategies that B2C stakeholders may use when positioning phytosanitary food treatments. Data were collected using in-depth interviews with 12 purposefully recruited New Zealand B2C retailers, based on the criteria of making and/or influencing decisions about the supply of fresh fruits and vegetables to consumers. Thematic analysis was used to analyze the qualitative data. The study advances research in food marketing by showing how different literacy levels may influence marketing narratives in the global food system. It makes a valuable contribution to literature by unveiling how appraisals of invasiveness, familiarity, naturalness, and sustainability lead to different applications of positioning narratives: the purist approach, maintaining the romance, and full transparency.