A pollinating device for pollinating crop plants includes a base mountable on a carriage. At least one pollination unit is mounted on the base and includes a pollen-releasing apparatus configured to release pollen from male flowers of the plants and at least one nozzle for directing fluid along a flow path for delivering at least some of the released pollen to the pollen-receiving rows of crop plants. Certain pollinating devices include multiple pollination units spaced apart along a width of the base. Some pollination units include at least two opposing nozzles. Plants are pollinated by driving the carriage along a field and directing air from the nozzles over the pollen born by some plants to deliver the pollen to female flowers of other plants in the field.