Adolph Siot was the first vintner in the area just west of the town of Templeton. The vineyards and winery that we know today as the Rotta Winery were established by Adolph Siot, who purchased the land in 1891 from the West Coast Land Company.
The Wine History Project of SLO County preserves and presents two centuries of local viticulture through research, interviews, exhibitions, publications, talks and tastings. We work with local museums, galleries, archives, and wineries to organize events and exhibitions in venues throughout the county.
Together We Can Preserve the Story of Central Coast Winemaking

3592 Broad Street,
Suite 104,
San Luis Obispo,
CA 93401

(805) 439-4647

libbie@winehistoryproject.org

By Appointment
Adolph Siot was the first vintner in the area just west of the town of Templeton. The vineyards and winery that we know today as the Rotta Winery were established by Adolph Siot, who purchased the land in 1891 from the West Coast Land Company.
A deep dive into historical vineyards planted in San Luis Obispo County from 1779 to 1900.
The Rotta Winery, located at 250 Winery Road in Templeton, was operated by three generations of Swiss-Italians: the first generation by brothers Joe and Clement Rotta, the second by Clement’s son Mervin, the third by Clement’s grandson, Michael Giubbini and his wife. The ownership by members of the Rotta family spanned from 1908 to 1976 and then again from 1990 to 2013. Grape growing and winemaking operations by the Rotta family are thought to have been established around 1917 or shortly thereafter. Known for its jug Zinfandel wine, the winery to develop a strong following among Southern California surfers, Cal Poly students, and the Hippie generation who continue to talk about their visits and memories of Romilda Rotta to the present day.
Discover the history of wine in San Luis Obispo County in the 1800s.
The history of California and San Luis Obispo County’s wine in the 1800s.
Native American landscapes have been described in detail in the early correspondence and diaries of explorers, travelers, and traders who traveled to Alta California and the Pacific Coast as early as 1518. Their writings note that the landscape was often shaped by burning foliage but the traditional agricultural practices of tiling the soil, weeding, pruning, irrigating, sowing seeds, and selective harvesting were also used by Native Americans.
Robin Baggett and Bob Schiebelhut were working as young lawyers in San Francisco soon after graduating from law school. Within a few years they were both dreaming of moving to an area with a more laid-back and idyllic lifestyle. The dream of living in a beautiful area on the Central Coast of California found its roots in childhood. Both men had family backgrounds “steeped” in agriculture.
Early Explorers, the Missions Era, and the Mexican Period.
California viticultural history is unique in its origins, distinct from all other areas of the United States. California viticulture originated with the Spanish Crown seeking new lands to conquer and sending explorers to map and explore the Pacific Coast on land and sea.
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