This study will build on previous research that shows that parents in legalized marijuana contexts are unsure how to discuss marijuana use with their children. Effective communication is a key element of successful parenting strategies to prevent youth substance use, including marijuana. Children of marijuana-using parents are at especially high risk and effective prevention programs are needed. This study will recruit 50 parents of teens who live in states with legalized marijuana and who use marijuana themselves. The project will conduct a needs assessment, including open- and closed-ended questions about how parents are currently communicating with their children, barriers to communication, parents' openness to participating in parenting interventions, and what supports are particularly necessary. The goal of this study is to develop recommendations for future adaptations of existing family-based preventive interventions.