At a glance: Italian Plum is a plum tree rated hardy to zone 3b in our ratings (winters to -35°F), partially self-fertile, so a second variety nearby makes crops more dependable (bloom group 4 of 7, mid for a European plum), and it ripens about Sep 9 to Sep 29 in Missoula (our Missoula estimate).
Hardy to
Zone 3b to 8. The b means the