362 BlackIce® Plum

BlackIce® Plum:  BlackIce™ is a cross between a cherry plum and a conventional Japanese dessert plum, resulting in large fruit with superior winter hardiness and an early ripening date. Fruit size and yield are comparable to popular conventional cultivars; however, the ripening date is 2-4 weeks earlier. It is hardy and produces fruit in USDA zones 3b and 4. Naturally compact growth habit makes it easy to manage. Use 'La Crescent', 'Waneta', or American Plum for pollination. Zone 4-8

More Info:  https://en.wikipedia.org/wiki/Plum