In the face of mounting climate challenges, environmental sustainability has become an urgent priority globally. The United Nations Sustainable Development Goals (UNSDGs) and the European Union's Green Deal have placed great emphasis on the role of education in fostering sustainable practices. However, research indicates that Environmental Sustainability (ES) is often implicitly addressed in preschool curricula, with limited focus on the active participation of children as catalysts for change and global citizens. Additionally, there is a lack of pedagogical resources tailored to the needs of Deaf and Hard of Hearing (DHH) students. To address these gaps and cultivate a generation of environmentally-conscious citizens, the GreenGUARDens project endeavors to integrate both Environmental Sustainability (ES) and Green Entrepreneurship (GE) in kindergartens through innovative training and experiential learning.