Willamette Valley is Oregon’s principal wine region, extending south from Portland through a broad basin bordered by the Coast Range and Cascade Mountains. Its cool, maritime-influenced climate, long growing season, and varied volcanic, marine sedimentary, and windblown soils favor grapes that retain acidity and develop gradually.
Pinot Noir is the region’s defining variety, supported by Chardonnay, Pinot Gris, Riesling, and smaller plantings of other cool-climate grapes. The valley contains several recognized subappellations, including Dundee Hills, Eola-Amity Hills, Yamhill-Carlton, McMinnville, Ribbon Ridge, and Chehalem Mountains, and is known for wines of aromatic detail, moderate body, and strong site expression.