Lodi, located in California's Central Valley between Sacramento and Stockton, has emerged from its bulk wine reputation to become one of the state's most important quality wine regions, particularly renowned for exceptional old-vine Zinfandel plantings that date back over a century and produce wines of remarkable concentration and complexity. The region's Mediterranean climate, combined with deep alluvial soils and significant diurnal temperature variation from Delta breezes, creates ideal conditions for sustainable viticulture, with Lodi leading California in environmentally responsible farming practices through its comprehensive sustainability program.