I have two - three that have lived in the shade of 3 fairly large oak trees. They didn't grow as tall nor flower as much as when they had more sunlight but the blooms were beautiful all day long:
Caribbean Frank League - ~20-24 inches - rebloom - very dark
Night Wings - a bit taller at 26-30 inches -don't recall rebloom on this very dark bloom
Midnight Magic - midway in between these two in height - velvety in spades.
