In Greek mythology, the pomegranate is a symbol of the underworld. It grew from the blood of Adonis, god of beauty and desire.
Most people have heard the story of Persephone, daughter of Demeter and Zeus. When she was out picking flowers, Hades came up from the underworld and stole her away. She was probably picking flowers in a botanical garden, which we all know is SO WRONG! Don't pick anything in a botanical garden! The pic was taken in the herb garden. at the UC Botanical Garden.
Demeter, the goddess of agriculture, grain, and fertility was sad and angry. She used her power to cause famine. Zeus decided to use his power to get his daughter back on earth. Here is where the pomegranate, food of the underworld, comes into play. Persephone ate pomegranate seeds while in the underworld, so she was obligated to stay. The gods and goddesses worked out a compromise and Persephone was forced to stay in the underworld part of the year. During that part of the year, winter arrives on earth.
So we can thank the gods and goddesses for the seasons.