Walla Walla Valley is a wine region in southeastern Washington that extends across the Oregon border and forms part of the larger Columbia Valley. Its dry continental climate, long growing season, large diurnal shifts, and soils derived from loess, basalt, and river sediments support consistent ripening while preserving acidity.
The region is best known for Cabernet Sauvignon, Syrah, Merlot, and other Bordeaux and Rhône varieties, with vineyards concentrated on valley floors, rolling hills, and the foothills of the Blue Mountains. Walla Walla wines are generally recognized for ripe fruit, firm structure, savory complexity, and clear site expression.