This unit group includes landscaping and grounds maintenance contractors, who own and operate their own businesses. This group also includes supervisors who supervise and co-ordinate the activities of workers in the following unit groups: Nursery and Greenhouse Workers (8432) and Landscaping and Grounds Maintenance Labourers (8612). They are employed by landscaping companies, cemeteries, lawn care and tree service companies, nurseries and greenhouses and by landscaping operations of public works departments and private establishments.