"The Box Elder Maple tree, Acer negundo, is also commonly known as ashleaf maple, Manitoba maple, box-elder maple, and western box-elder. This deciduous maple tree is a small-to-medium-sized tree, reaching heights of 50 to 75 feet, with a trunk diameter up to 4 feet. Although it grows best on moist soils, box-elder is drought and cold resistant. The seeds are a source of food for birds and mammals, and are important because they stay on the tree through winter, when other food resources are scarce."