Grape Varieties in the Pacific Northwest

Abstract

The Pacific Northwest comprises the states of Oregon, Washington and Idaho and the Province of British Columbia. The main grape growing areas and potential areas for grape production in this region have similar soil and climatic conditions. Except for Idaho, the coastal climate of this region is in direct contrast to its interior climate. Coastal condition are usually mild with moderate to high rainfall, cloudy weather and winter temperatures above 0°F. The interior valleys have low rainfall, abundant sunshine during the growing season and are irrigated. However, winter temperatures may often drop to 0°F and infrequently to -19 tot-24°F.