The kidnapping of her daughter, Persephone; by Hades, and permitted by Zeus.
Hades (Demeter's Brother) sees her Demeter's daughter, Persephone and he abducts her and marries her. Demeter doesnt know where her daughter has gone and searches for her. Thus during her intense search she neglects her duties as goddess of the harvest.
Mourning for the abduction of her daughter.
Demeter was the most generous of the great Olympian goddesses.She is the goddess of the harvest. Demeter provides all the nutrients on earth and is the mother of the earth ..The earth can not live without Demeter allowing its seeds to grow . She is the goddess of the harvest. Demeter is particularly prominent in the Greek legend of the abduction of her daughter Persephone (Kore) by the underworld god Hades. Distraught at her loss, Demeter neglected her duties as a vegetation while she searched for her daughter.
she is the Greek Goddess of Agriculture
Demeter cult titles includes Sito (she of the Grain, the giver of grain) and Thesmophoros (bearer, giver of divine order, law-bringer). As a goddess did not have duties. She was the goddess of grain, the harvest, who presided and the fertility of the earth.
For the Greek goddess Demeter, the best known sign is the cornucopia which, represents the harvest. Demeter was the mother of the harvest. When her daughter Persephone was captured by Hades she went on a hunt to find her. During this time, she left her duties undone until her daughter was returned from the Underworld. This is how the Greeks explained Winter.
It isn't really Demeter who saves Persephone, but Zeus. After Persephone is abducted by Hades, Demeter (the goddess of the harvest, and mother of Persephone), begins to neglect her duties. Humans begin to go hungry, so Zeus sends Hermes to the underworld, to talk to Hades. (Hades gives Persephone back, but she has eaten in the underworld and must return for a period each year. This myth explains the winter.)
It isn't really Demeter who saves Persephone, but Zeus. After Persephone is abducted by Hades, Demeter (the goddess of the harvest, and mother of Persephone), begins to neglect her duties. Humans begin to go hungry, so Zeus sends Hermes to the underworld, to talk to Hades. (Hades gives Persephone back, but she has eaten in the underworld and must return for a period each year. This myth explains the winter.)
When Hades abducted Persephone to the underworld her mother Demeter grieved. Demeter is the goddess of crops and harvest. When she missed her daughter she could not fulfil her duties, so nothing grew on earth. Then it was arranged that Persephone was to come back to her mother for part of the year. When she is, her mother is happy. That is the cause of our seasons.
There was no summer or winter until Persephone had been abducted to the underworld. Her absence made Demeter neglect her duties and nothing grew (= winter).
Demeter is devastated and mourns the disappearance of her daughter, Persephone. She searches tirelessly for her and neglects her duties as the goddess of agriculture, causing the earth to become barren. Demeter's grief and anger lead her to withdraw her powers, resulting in widespread famine.
She was accused of neglecting her responsibilities as a parent.