Growing walnuts in Oregon

Published March 2006. Reviewed September 2017. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalogThe Persian, or English, walnuts (Juglans regia) grown commercially in Oregon evolved in the mountainous regions of central Asia. California is a world\ud leader in walnut production and produces 99 percent of the United States walnut crop. This publication is designed for those who grow walnuts commercially in Oregon, as well as for homeowners with walnut trees