Median annual earnings of wage-and-salary workers in green-industry jobs, May 2004 Median Annual Job Earnings Landscaping and groundskeeping workers $20,420 Pesticide handlers, sprayers, and applicators 25,590 Tree trimmers and pruners 26,150 First-line supervisors 35,340 Landscape architects 53,120 General and operations managers 73,550 (in landscaping services industry) Chief executives (in landscaping services industry) 114,680