Prunus ‘Northstar’ Northstar Dwarf Cherry Description This genetic dwarf tree is vigorous and hardy. Its tart, sour cherries are excellent for eating and canning. Fruit is red with red flesh. Self-fertile. Characteristics Hardiness Zone: 4 Light requirements: Sun Height: 7-10' Spread: 6-8' Native: No Sizes & Prices Size: 7 GALLON $89.98 Other Information All Cherry Sour Cherry Prunus 'Montmorency' Zone: 4 Sun HT: 10-12' Northstar Dwarf Cherry Prunus 'Northstar' Zone: 4 Sun HT: 7-10' Sweet Sour Cherry Prunus 'Sweet Cherry Pie' Zone: 4 Sun HT: 15'