In Celtic mythology, the goddess associated with fertility and the harvest is Brigid. Her attributes include the nurturing aspects of nature, agricultural abundance, and the transition of seasons. Celebrated during the festival of Imbolc, Brigid embodies the rejuvenation of earth after winter, highlighting her role in fertility. Her influence is evident in various customs linked to planting and harvest, symbolizing the importance of cycles in nature and the sustenance they provide for communities.