California as a wine producing region has grown in size and importance considerably over the past couple of centuries, and today is the proud producer of more than ninety percent of the United States' wines. Indeed, if California was a country, it would be the fourth largest producer of wine in the world, with a vast range of vineyards covering almost half a million acres. The secret to California's success as a wine region has a lot to do with the high quality of its soils, and the fact that it has an extensive Pacific coastline which perfectly tempers the blazing sunshine it experiences all year round. The winds coming off the ocean cool the vines, and the natural valleys and mountainsides which make up most of the state's wine regions make for ideal areas in which to cultivate a variety of high quality grapes. Regularly described as being the grape varietal responsible for producing the world's most romantic wines, Pinot Noir has long been associated with elegance and a broad range of flavors The name means 'black pine' in French, and this is due to the fact that the fruit of this particular varietal is especially dark in color, and hangs in a conical shape, like that of a pine cone. Despite being grown today in almost every wine producing country, Pinot Noir is a notoriously difficult grape variety to cultivate. This is because it is especially susceptible to various forms of mold and mildew, and thrives best in steady, cooler climates. However, the quality of the fruit has ensured that wineries and vintners have persevered with the varietal, and new technologies and methods have overcome many of the problems it presents. Alongside this, the wide popularity and enthusiasm for this grape has ensured it will remain a firm favorite amongst wine drinkers for many years to come. California's beautiful and remarkably fertile Sonoma Valley has grown over the decades to become one of the United States' most respected and profitable wine regions, with wineries within the region benefiting from the superb Californian sunshine, low rainfall and wonderfully rich soils. Because of this vital combination of excellent conditions, the region is able to grow a wide range of grape varietals for use in the production of an impressive array of wines, with many different red and white wine grapes flourishing each year and producing excellent and characterful results. The soils have been enriched by volcanic activity, and the presence of geothermal springs, which make this region a unique one, and very much the beating heart of California's ever growing wine industry.