The field of higher education (HE) is characterized by diversity stemming from multiple sources. Diversity results in boundaries that carry the potential to promote personal and professional development for HE students. Boundaries also offer the possibility of learning generic skills and planning and carrying out challenging tasks that require collaborative problem solving in multidisciplinary teams. Drawing upon the theory of boundary crossing, this study aims to identify the kinds of boundaries that HE students experience during a multidisciplinary online course on forest bioeconomy and how they manage these boundaries in terms of boundary crossing while collaboratively solving an ill-defined development challenge set by a working life organization. The data consist of in-depth interviews with student teams (N = 20). The results provide insights into the pedagogical principles through which students' boundary-crossing processes can be facilitated in HE online learning settings.