Introduced into France from Armenia circa 1500, through England to America shortly before the revolution. Originally called Reine Claude, was renamed Green Gage after the Englishman Mr. Gage who imported it from France. It is partially self-fertile and well pollinated by Oullins Gage and probably most other domesticas. The fruit has green skin that turns slightly yellow when tree ripe. Its flavor is considered outstanding by fresh plum connoisseurs. Brown rot can be a serious problem if multiple pickings are not strictly made to keep ripe clusters open. Cold hardy through zone 4; Dave Griffin in Cold Spring MN has 12 year old trees that have survived repeated winters at 30 below.