The winery is located in Healdsburg in California Alexander Valley (Region Sonoma County ). The historic establishment was founded in 1876 by the two Tuscan wine brokers Giuseppe and Pietro Simi. From 1904, the winery was managed by Giuseppe's daughter Isabelle. This continued with foresight even during the American one prohibition Production continued from 1920 to 1933 and the wines were stored in the cellar. That is why Simi was one of the few companies to sell wine at the end of prohibition. Isabel Simi sold the business to the oil magnate Russel Green in 1970, who sold it to Michael Dixon in 1973. Simi 's heyday began in 1979 when Dixon' s Mondavi upcoming oenologist Zelma Long was hired. This carried out a series of quality-enhancing measures. That was among other things stainless steel tanks instead of the large wooden vats and French barriques for the expansion of the wines.
The owner carousel continued because in 1981 Simi joined the group LVMH sold as a consultant to the famous oenologist Michel Rolland (* 1947) committed. Landslide Vineyard in the south of the Alexander Valley was acquired as a second winery in 1982. In 1989, 40 hectares of vines were planted in the AVA area Russian River Valley (also Sonoma County) bought. The vineyards now cover a total of 280 hectares. Zelma Long became CEO of the company in 1990. The premium wines include the single varieties varietals (Varietal wines) Cabernet Sauvignon. Chardonnay. Chenin Blanc. Merlot and Pinot Noir, as well as the Meritage (Cuvée) "Sendal" Sauvignon Blanc and Sémillon, As the last change of ownership for the time being, Simi finally became the property of the American beverage multinational in 1999 Constellation Brands,