Afamomums are basal blooming plants from Africa, and are seldom found in cultivation - much less offered for sale to the public. The most well known is A. melegueta that produces the spice "grains of paradise". Aframomum daniellii is also used as a spice in Africa (and medicinally by the native people of Camaroon) and is sometimes known by the common name "bastard cardamom". I have even seen claims that use of the seeds of Aframomum have been shown to improve the sexual vitality of men in native African tribes that use this spice, but I make no such representations :) .
The plant has thin stems and narrow leaves and grows to about 4 feet tall in a gallon sized pot. The flowers are a soft lavender color and bloom in the spring time in my greenhouse. I have not tried growing this outdoors through the winter, but I doubt it would be hardy in areas with frost. In its native habitat it grows in forested areas and I am growing it in part shade. If you want to try a REALLY different ginger that no one else in your town is likely to have, here is your chance.