Alkmene is a great quality tart apple which is more tart and robust than its parents, Cox's Orange Pippin and Oldenburg. It was developped in Germany in the 1930s.
Flowering group: 2, and self-fertile. It can cross pollinate with flowering groups 1, 2, and 3.
Hardiness Zone: 5-8. Calculate to see if your zone falls in this range here