There are diverse potentials for environmental political engagement in various forms among wide circles of the population, such as volunteer work, participation in environmental projects, or financial support. This description illustrates how environmental organizations can be enabled and supported to recognize and mobilize these observable readiness levels in society for their everyday work. The study is based on an evaluation of relevant literature, an analysis of good examples from other countries, expert interviews, and focus groups. The results are presented along with numerous suggestions and recommendations to promote environmental engagement for various key stakeholders.