Twice as large as Napa in size, Sonoma County only makes about a half the amount of wine as her northeasterly neighbor. But Sonoma, with her size, is able to vouch for more diversity within her borders, including sub-AVAs that are climatically varied. The atmosphere of Sonoma is decidedly laid back and down home country style. But in wines, they are keeping up with the Joneses, or Napa-ites if you will. Grape varieties are more varied here, from Pinot Noir and Zinfandel to Cabernet Sauvignon and Chardonnay.
The largest sub-AVAs of Sonoma include Dry Creek Valley, Russian River Valley, Alexander Valley and Sonoma Valley. Each sub-AVA, with its own micro-climate, is unique in its grape varieties and styles of wine. Dry Creek makes a mean Zinfandel while Russian River produces stand up Pinot Noir and Chardonnay. The Alexander Valley makes some of the better Cabernet Sauvignons in the county and Sonoma Valley creates excellent wines from all the above varieties. Other grapes found throughout Sonoma include Sauvignon Blanc, Merlot and Syrah.