Tree commissioners, who are they? Tree commissioners are volunteers in the community that have a desire to plant and care for trees in the public rights-of-way in Marietta. Qualification for choosing commissioners are as follows: 1. The mayor of Marietta appoints the tree commissioners; 2. the mayor accepts recommendations from the tree commission; 3. the candidate must have the time to provide the number of hours needed for the appointment; 4. the mayor will conduct a personal interview with the candidate and, if qualified, appoint the candidate as a tree commissioner for a three-year period. When the three years are completed, a reappointment may be made by the mayor. The tree commission is made up of 11 members. These members include nine tree commissioners and the other two members are the Lands and Building Committee, City Council and the mayor or his appointee. The members of the tree commission must spend many hours in the work and maintenance of trees in the community and receive no payment for hours that are spent in this endeavor. The tree commission serves as an advisory committee to the mayor and City Hall.