Demeter is a daughter of Cronus and Rhea and sister of Zeus by whom she became the mother of Persephone. When Persephone was abducted by Hades, lord of the underworld, Demeter wandered the earth in search of her lost child. During this time the earth brought forth no grain. Finally Zeus sent Hermes to the underworld, ordering Hades to restore Persephone to her mother. However, before she left, Hades gave her a pomegranate (a common fertility symbol). When she ate from it, she was bound to spend a third of the year with her husband in the infernal regions. Only when her daughter is with her, Demeter lets things grow (summer). The dying and blossoming of nature was thus connected with Demeter.