The TREE Fund is invaluable to our research in the Morton Arboretum Soil Science (MASS) laboratory. A major goal of our lab is to perform research on managing urban soil quality with the intent of improving urban tree establishment and growth. The outcomes of the research have direct application to horticulture, arboriculture, and urban forestry. The TREE Fund is one of the only institutions in the world funding this type of research. Without the TREE Fund this research would not be conducted.