Acer nigrum, or black maple, now classified as a subspecies of sugar maple (Acer saccharum ssp. nigrum), is native to Ontario, and is found in the eastern and central United States, extending into southern Canada in southern Ontario and Quebec. It is valued for its dense, rounded crown, dark furrowed bark, and vibrant fall colors. It prefers well-drained rich soils, and has limited availability in the nursery industry but can be commonly planted in urban environments and is a recommended urban tree. It is advisable to prune in the late spring (June), as cutting may cause sap to leak from the wounds. While this can impact the tree's appearance, it does not harm the tree. Black maple suffers from salt, drought, and air pollution. While it is not suited to hostile urban sites it can make an excellent tree for gardens, residential areas and parks with large lawns (similar to sugar maples).