The god in Greek mythology who has control over the seasons is Demeter, the goddess of agriculture. She governs the cycles of planting and harvest, directly influencing the abundance of crops and the world's sustenance. Demeter's relationship with her daughter, Persephone, significantly impacts the changing seasons; Persephone's descent into the Underworld symbolizes winter, while her return heralds spring. This myth reflects the interconnectedness of life, death, and the natural world.