The Mission San Luis Obispo produces over one hundred barrels of wine a year. Its vineyard becomes the mission system’s second-largest, after the Mission San Gabriel’s.
Vinifera vines are imported to Long Island from England and Austrian Empire.
George Gibbs introduces the Zinfandel grape to America.
The secularization of Mission agricultural lands by the Mexican government leads to the abandonment of the vineyards. The laws of secularization are enforced by the Mexican government. Mission buildings, crops, cattle and sheep are plundered by local Californians, vineyards and orchards are abandoned. Anger and frustration erupts in violence.
The Treaty of Guadalupe is signed by Mexico cedes California, New Mexico and the land west of the Rocky Mountains to the United States.
Gold is discovered in California which changes the world bringing over 300,000 fortune seekers to the San Franciso Bay area and accelerating the spread of agriculture and viticulture in California.