Alpinia oxyphylla 'China White Ginger'
Black Cardamom. Produces spikes of white or pale pink flowers.
Alpinia oxyphylla is also known as Black Cardamom. It grows well in USDA zones 8 and up but will not flower until stems are at least two years old. In others words, stems and tips that have previously frozen will not produce blossoms.
This Alpinia is shorter than the more commmonly seen Alpinia zerumbet and is suitable to fill in an area where the larger Alpinia would be too big. It produces spikes of white to pale pink, shell like flowers that are darker pink to red in the middle.