This article extends our understanding of risk communication related to communal risk and risk information sharing. Building on research from risk communication, organizational behavior, and social psychology, it examines individual-, relation-, and community-level motivations to share information about a devastating plant disease. This disease can bring about substantial economic risk to everyone in a farming community. We tested our hypotheses using a national sample of U.S. tomato and potato growers (N = 452). Our findings show that growers were motivated to share information about a communal risk based on (a) individual-oriented concerns for economic costs, (b) relation-oriented concerns for reciprocation and the information recipient’s trustworthiness, and (c) community-oriented concerns comprising a sense of shared responsibility and community cohesiveness.