Existing trees are growing in poor conditions, and their roots lack adequate access to soil, air and water. These conditions are contributing to their decline. The existing tree species mix also lacks diversity and includes some species that should not be used. New replacement trees can be planted with systems and techniques that provide better access to air, uncompacted planting soil, and water. New trees will be better placed in relation to business entrances, building facades, parking spaces and streetscape geometry. These changes will improve access to businesses and the sidewalk and curb-side space available for public use and placemaking. These advantages cannot be built around existing trees. The new urban forest will also feature a more diverse mix of species that will provide better resilience to disease and invasive pests, add variety to the downtown, and eliminate problematic trees that are weak wooded and prone to limb breakage during storms.