Trees Please is a project designed to engage Hamilton’s lower city neighbourhoods in air monitoring and urban tree health assessment. Starting in two neighbourhoods, Beasley and Beach Strip citizen scientists will do an inventory of the urban forest, building an interactive database for community members to access and contribute to through the word wide web. In 2017, we will continue to work with our original two neighbourhoods and move into two others: Crown Point and McQuesten. We will provide workshops and expertise in urban forestry data collection, stewardship, and tree care. We aim to promote tree plantings with local neighbourhood organizations, the City of Hamilton and provide guidance for tree selection and success! The inventory data collected will be analyzed and compared with air quality data collected through Environment Hamilton’s INHALE and BAM air monitoring programs. With these data sets we will identify the areas in most need of trees to reduce air particulate and improve the health and livability of our city!