In agriculture, web-based social media are increasingly used to share knowledge concerning best practices. One goal of agroecology is to reduce the use of synthetic chemical inputs. Agroecology represents a contrast with intensive agriculture in that it better manages interactions with life forms. It is crucial to help people share their knowledge to accomplish the agroecological transition. This paper proposes an analogy between the use of social media to facilitate (1) caring for plants in the context of agroecology and (2) preventing human diseases in the context of medicine. The authors created a bibliography of scientific publications related to social media use in preventative medicine to identify best practices for social media use (and the associated drawbacks) that can be applied to develop social media dedicated to agroecology.