The Colonnade Tree is a type of ELM tree, which is a deciduous tree that is native to Europe, western Asia, and parts of northern Africa. It is characterized by its tall, straight trunk and its vase-shaped crown, which is made up of many branches that spread out in a symmetrical pattern. The Colonnade Tree is also known for its long, arching branches, which can reach up to 30 feet in length. It is a popular choice for landscaping due to its attractive shape and its ability to provide shade.