A professional who supervises and coordinates activities of workers engaged in propagating, cultivating, and harvesting horticultural specialties, such as trees, shrubs, flowering plants, flowers, and mushrooms, applying knowledge of environmental-control structures, systems, and techniques and plant culture. Respnsibilities include:

• Discusses plant growing activities with management personnel to plan planting and picking schedules and employee assignments; obtain authorization for changes in fertilizer, herbicide, and pesticide application techniques and formulas; resolve problems; and develop procedures for new species in product line and new cultivation techniques.
• Observes plants and flowers in greenhouses, pots, cold frames, and fields to ascertain condition, such as leaf texture and bloom size; and oversees changes in humidity and temperature levels and cultivation procedures to ensure conformance with quality control standards.
• Prepares and assigns work schedules.
• Trains new employees in gardening techniques, such as transplanting and weeding, and grading and packaging activities.
• Inspects facilities for signs of disrepair, such as missing glass panes and clogged sprinklers, and delegates repair duties to ensure refurbishing or replacement of parts in environmental-control structures and systems.
• May drive and operate heavy machinery, such as dump truck, four-wheeled tractor, and growth-media tiller, to handle materials and supplies.
• May perform variety of duties involving propagation, care, and marketing of plants and crops.
• Performs other duties as described under supervisor master title.
• May be identified according to kind of establishment as Greenhouse Superintendent; or crop as Mushroom-Growing Supervisor; Orchid Superintendent.