An Introduction to California
California is by far the largest wine region in the USA, responsible for around 81% of the nation’s wine production. To give you an idea of scale, if you withdrew Cali’ as its own country, it would be the fourth largest wine producing country in the world! More than 100 grape varieties (both red and white) are grown across the State, with Cabernet Sauvignon the leading red and Chardonnay the leading white. Generally speaking, white grapes are better suited to the cooler coastal regions where they benefit from the Pacific Ocean’s cool breeze. Red grape varieties tend to flourish in the warmer inland areas, and Californian reds have deservedly earned international acclaim over the past few decades.
Climate and Geography
The North Coast
The North Coast (AVA) of California is home to some of the country’s most reputable and prestigious AVA sub-regions, spanning the counties of Napa, Sonoma, Mendocino, Solano and Lake. While some of these sub-regions aren’t technically situated on the coast, the North Coast nametag is used to separate them from the warm and dry inland areas. Generally quite mountainous, these counties rely on the cool breeze of the Pacific to balance out the Californian sunshine, providing perfect growing grounds for Chardonnay, Cabernet Sauvignon, Pinot Noir and Sauvignon Blanc.
The Central Coast
The Central Coast (AVA) stretches from Santa Barbara in the South to San Francisco in the North. It covers more than 40 AVA sub-regions across the counties of Santa Cruz, Monterey, Paso Robles, San Luis Obispo and more. Most of the vineyards here lay open to the Pacific Ocean, where the cool breeze partially protects vines from the sun and forms some magically-misty morning scenery. From the predominately limestone soils across the region you can expect fine expressions of Pinot Noir and rich Chardonnay, though warmer climate reds start to take dominance further in-land.
Southern California
Southern California (as it’s loosely titled) encompasses numerous smaller AVA sub-regions across San Diego, San Bernardino, Riverside and Los Angeles. A lot of the vineyards here are situated on the western side of mountain ranges, reaping the benefits of a warm Mediterranean climate moderated by the cool, moist breeze from the Pacific Ocean. Rocky and sandy soils tend to dominate, providing effective drainage for vines of Zinfandel, Cabernet Sauvignon and Chardonnay (among others).
The Central Valley
The Central Valley is by far the busiest region in California for all agricultural produce, not just wine. It covers AVA sub-regions spread across the counties of Sacramento, San Joaquin, Madera, Stanislaus and Fresno. Sandwiched between coastal mountain ranges to the West and the Sierra Nevada Mountains to the East, the warm and dry conditions here support higher yields, with a lot of the areas produce used for bulk wine. Grape varieties with natural high acidity are more suited to the conditions in these fertile lands, with some of the stand-out performers including Chenin Blanc, Zinfandel, French Colombard, Chardonnay and Barbera.