Semillon was, at one point not so long ago, widely believed to be one of the most grown grape varietals in the world. Whilst today the numbers of Semillon grapes has dropped considerably, it remains a widely planted grape with vineyards all over Europe and the New World dedicated to making the most of this special and flavorful varietal. The grapes are recognizable by their golden color, and the fact that they can take on a pinkish hue in particularly warm climates. The wines the Semillon grape produces are notably varied, and are often very crisp and dry, or sweet and soft, full of a wide range of flavors Commonly, dry Semillon wines are particularly citrus in flavor, with a delicate and summery bouquet. The vine is hardy and vigorous, and notable for being easy to grow and produce high yields from. Since it began in the 1820s, wine-production in Washington state has gone from strength to strength, with many of the finest United States wines coming out over the past twenty years hailing from this region. Today, the state is the second largest US producer of wines, behind California, with over forty thousand acres under vine. The state itself is split into two distinct wine regions, separated by the Cascade Range, which casts an important rain shadow over much of the area. As such, the vast majority of vines are grown and cultivated in the dry, arid desert-like area in the eastern half of the state, with the western half producing less than one percent of the state's wines where it is considerably wetter. Washington state is famed for producing many of the most accessible wines of the country, with Merlot and Chardonnay varietal grapes leading the way, and much experimentation with other varietals characterizing the state's produce in the twenty-first century.