Tempranillo the Spanish Conquistadors in the 17th century, as certain Criolla varieties in Argentina have a closer genetic relationship to Tempranillo than to a small handful of other European varieties against which the Criolla varieties were tested. Despite its apparent fragility, Tempranillo travelled widely during the 20th century and, following much trial and error, has become established throughout the world. In 1905, Frederic Bioletti brought Tempranillo to California where it received a cool reception not only due to the encroaching era of Prohibition, but also because of the grape's dislike of hot, dry climates. It was much later, during the 1980s,
Creston District AVA acres with 1,365 planted in vineyards. It lies on an old erosional plateau at the base of the La Panza Range with alluvial terraces and fans of Huerhuero Creek. The area is in elevation. Average annual rainfall is . The district's soils consist of old, well developed terrace and hillside soils; mix of granite and sedimentary rock. The most widely planted varieties in the Creston District AVA are Cabernet Sauvignon, Syrah, Zinfandel, Merlot, Petite Sirah. Creston District AVA Creston District AVA is an American Viticultural Area located in the south east portion of the Paso Robles AVA in San Luis