Eventually, Italian and German immigrants brought in their own wines and produced wine in the 1860s and 70s. Italians from Puglia brought in the Ottavianello varietal, which is related to Cinsault (a French Rhone blending grape). This little known grape is no longer grown in Washington (though Cinsault is), but a recent indigenous grape revival has put it back into production in Puglia. In the Ostuni DOC, wines are made up of no less than 85% of the Ottavianello varietal!
Wine production continued until Washington became one of the first states to begin Prohibition in 1916 and all Vitis Vinifera vines were lost. After Prohibition, Concord grapes were planted, mainly by the Nawico and Pommerelle wineries, and used to create fortified sweet wine. Finally, in the 1950s, Washington State University began to replant Vitis Vinifera vines (Grenache being the first) and test which varietals grew best in local climates and soils. Some professors eventually banded together in 1962 to create what is now Columbia Winery, while Nawico and Pommerelle combined to form Chateau Ste. Michelle, and both began to produce premium wines.
In the 1970s, Washington found a new home for Cabernet Sauvignon. This grape brought them national acclaim, with Leonetti Cellar being the best example in 1978. More notariety would come with Chateau Ste. Michelle being named Best American Winery in 1988 and five Washington wines making Wine Spectator's Top 100 for the very first time in 1989. Today Washington has 650 licensed wineries and countinues to grow every year. The state has a colorful wine past and a bright future!