A greenhouse manager oversees the daily operations of a greenhouse. Their duties include hiring and training new staff, managing schedules, and directing staff on tasks, such as the propagation, cultivation, and harvesting of plants. As a greenhouse manager, you may work on a farm, for a large, commercial agricultural operation, or in a horticulture department on a college campus. You breed and cultivate decorative or functional trees, shrubs, and flowers. You are responsible for daily inspections of the facility to ensure the conditions are optimal for the plants and handling any diseases or pests that may appear in the greenhouse.