Trees are valuable components of the Canadian ecosystem and natural instruments of carbon storage and sequestration. A tree’s growth is controlled by regional climate, including growing season length and air temperature. It is also impacted by local hydroclimate; water and temperature variations that occur on a smaller scale. Black spruce trees are common within the boreal landscape of North America, including within fen wetlands. There is limited research on black spruce growth in fens, and how the unique hydroclimate of fens may impact tree growth in a changing climate. Tree core and ring samples were collected from both sites and placed within a microscope slide scanner. This allowed key tree growth characteristics to be identified on a cellular level. Correlation analysis was conducted between these growth characteristics and long-term climate data to determine the relationship between the two variables.