Vinalia Rustica was held on 19th of Sextilis (August). It was originally a rustic Latin harvest festival, celebrating the grape harvest, vegetable growth and fertility. At the Roman Vinalia Rustica, kitchen gardens and market-gardens, and presumably vineyards were dedicated to Venus Obsequens, the oldest known form of Venus. In Roman mythology, it marked the fulfillment of a vow by the ancient Latin allies of Rome's legendary ancestor Aeneas, who promised all wine of the next sacred vintage to Jupiter, in return for victory against the Etruscan tyrant Mezentius.