Thornless Evergreen the most important variety in Oregon, the thornless variety of the Evergreen was discovered near Stayton Oregon in 1926.  The origin of the thorny Evergreen is unknown but it was being grown in Europe as early as 1809.  Berries are large, exceptionally firm, sweet, seeds are large, the season is late to very late, and ripening continues beyond when other blackberries are picked. Bushes vigorous, semi-hardy, deep rooted, drought resistant, productive, semi trailing, one of the best varieties in Oregon and Washington but not adapted to the states east of the Rocky Mountains except New Jersey.