Abstract Aim This study aimed to investigate the influence of green transformational leadership educational intervention on nurse managers’ green behavior and creativity. Background Organizational creativity is greatly influenced by leaders and their personality attributes. Additionally, innovative employee behavior is crucial for organizational performance and survival, which in turn promotes long term organizational growth. Method A quasi-experimental design was conducted by using pre-test, post-test, and follow-up for a group that included 116 nurse managers who completed the intervention. Data were collected through the green transformational leadership knowledge questionnaire, green transformational leadership scale, green behavior questionnaire, and green creativity scale. Results Following the implementation of the Green Transformational Leadership educational intervention, there was an improvement in responses connected to the nurse manager’s use of green behavior and creativity. Three months after the intervention ended, the improvement was still present. Conclusion Nurse managers who had good knowledge about green transformational leadership showed increased green behavior and green creativity, which enhanced the organization’s success. This study showed the significance of developing and improving the skills of managerial creativity for the nurse supervisor of a hospital through training in transformational leadership. Implications for nursing management The concept of “green transformational leadership” refers to leadership behaviors and strategies aimed at promoting environmental sustainability and responsibility within an organization or a specific context. In the case we mentioned, it involves implementing educational interventions targeted at nurse