After acquiring and planning such cemetery or cemeteries, the circuit court of the county wherein the cemetery is located shall appoint not less than five nor more than nine trustees, who shall reside in the city or county, for the purpose of managing and controlling such cemetery. The trustees shall have the power to convey lots in the cemetery in accordance with the plan thereof, without authority of court, and to include in deeds of conveyance such reasonable restrictions and conditions as they deem advisable, and shall have all other powers granted by general law to trustees of cemeteries. Such trustees shall, before entering upon the performance of their duties, give bond with approved security and in such penalty as the court determines for the faithful performance of their duties.