Systems for harvesting cotton from plants are provided. In this regard, a representative system incorporates an extracting zone and nozzles. The extracting zone is operative to receive therein stalks of plants from which cotton is to be removed. The nozzles are operative to direct vacuum pressure toward the stalks of the plants received within the extracting zone such that cotton is removed from the stalks and drawn into the nozzles. The nozzles also are operative to move relative to the extracting zone.