The Tracking the Colour of Peatlands project is a global community science initiative designed to quantify peatland vegetation phenology using standardised, fixed-point RGB photography. Participants use purpose-built smartphone mounts at publicly accessible sites and repeatedly photograph peatland landscapes, generating time-series imagery from which seasonal “greenness” trajectories are derived. These trajectories capture phenological stages such as green-up, peak productivity, and senescence, enabling comparisons across years, climates, and ecosystem types. The network currently includes more than 20 sites worldwide, including two active sites in Canada, with a new parallel initiative launching to track the colours of wetlands across Québec. Peatlands and wetlands are globally significant carbon stores whose seasonal dynamics strongly influence ecosystem function and climate feedbacks. Green leaf phenology, reflected in changes in vegetation colour, provides an integrative indicator of ecosystem condition, productivity, and response to climate forcing. Image-based records offer a simple, low-cost complement to satellite observations, capturing fine-scale heterogeneity and site-specific dynamics that are often hard to detect at coarser scales. A central feature of this project is its emphasis on public engagement. By inviting visitors and local communities to participate in data collection, the initiative transforms routine site visits into opportunities for learning and stewardship. Participants gain an understanding seasonal change and to the ecological importance of peatlands and wetlands. This combination of scientific research and outreach builds both robust phenological datasets and broader awareness of the value and vulnerability of wetland ecosystems in a changing climate.