The Elms are a type of tree found on the National Mall in Washington, D.C. The Elms are a species of deciduous trees that are native to Europe and Asia, but have been planted in many parts of the United States. They are a popular choice for landscaping due to their attractive foliage and fast growth rate. The Elms on the National Mall provide shade and beauty to the area, making it a popular destination for tourists and locals alike.