Demeter is the goddess of agriculture, fertility, and the harvest. Her daughter Persephone was abducted by Hades, god of the underworld, to be his wife. This caused Demeter great sorrow and she refused to let anything grow until Persephone was returned. It was agreed that Persephone would spend part of the year with Hades and part with Demeter, explaining the seasons of growth and dormancy on Earth.