In 2020, Fridays for Future activists joined forces with public transport workers to promote a climate-friendly mobility transition in Germany called #wirfahrenzusammen. To make redistributive claims, #wirfahrenzusammen adopted organizing practices from the United States. Given that social movement studies have identified struggles for recognition and advocacy- and mobilizing strategies as dominant practices, the question arises as to why the campaigners chose to buck the trend. This study, therefore, aims to identify and explain the strategic choices by turning to campaigners' interpretations of organizing. Applying a postmodern Grounded Theory method, I analyzed five semi-structured interviews, internal documents, and public information materials. Discourse analysis enabled the conceptualization of organizing practices in terms of their scale and scope by drawing on Nancy Fraser's theory of affirmative and transformative boundary struggles. The results indicate that strategic considerations, normative convictions, and path dependency led to the campaigners' choice of organizing practices which express affirmative and transformative boundary struggles.