Oaks are evergreen trees. Oak is 25 to 30 meters high, and its bark is dark grayish brown and slightly smooth. Branchlets brown and glabrous. The oak tree is very tall, protecting other weak trees like his father. To the Oak is a poem praising the oak tree. There are many kinds of oak trees, such as white summer oak, red oak and so on. Its fruit is a kind of nut, which is well known to people.

April 30, 20001The American Arbor Day Foundation recently announced that the oak tree was selected as the national tree of the United States through public network voting.