Purpose: This paper aims to draw on an in-depth qualitative case study of an undergraduate sustainability education course to show the extent of pedagogical reflection and teaching capability demonstrated in lived practice to support transformative, systemic and capability building learning processes, as advocated in the literature, for effective sustainability education. Design/methodology/approach: Transformative learning and capability building are an essential part of sustainability education according to the growing body of literature. This approach to education, however, necessitates critical, learner-centred pedagogies which challenge traditional transmissive modes of teaching. Findings: This paper finds that pedagogy which supports the learning experiences and outcomes advocated in sustainability education literature requires significant reflection on behalf of the educator and also motivation, capability and experience to do this, thus more research and academic support is needed which focusses on pedagogical development within sustainability education. Originality/value: Literature on sustainability education often assumes that teachers are capable of reflecting on and transforming their pedagogical practice, and therefore, the pedagogical implications of sustainability education are often understated in research findings. This paper highlights why pedagogical reflection plays a crucial role in the effective implementation of sustainability education.