The authors take a reflective journey to explore the research methodology utilised in a multi-method, multi-site research study of children's environmental learning in schoolgrounds in Australia. Informed by an extensive literature review and dialogue with researchers around the world, the study constructed a research design and procedure that could be utilized by practitioner researchers and academic researchers as the foundation for further research on children's learning in schoolgrounds. This paper has the specific task of sharing our research story and lessons learnt as a conversation to those who intend to conduct future research with children on schoolground greening projects.