The state flag and the state seal are similar. Passed in 1923, Washington state law describes the flag as having dark green bunting with a state seal in the center. It is the only state flag that is green. It is also the only state flag with a picture of a president. Washington anthem: “Washington, My Home” written by Helen Davis and arranged by Stuart Churchill. With this video you can see the flag and hear the anthem. Good for all students. (02:31)