Hardy Alpinia. Resembling a dwarf ginger, this is probably one of the most cold hardy of this group, evergreen down to 20°F for us here in middle zone 8. Here after a mild winter, we will have spectacular 20" red flower spikes in April in protected areas. Since it flowers on 2 year old canes, in most years, one will not see flowers. But if over-wintered above the mid-twenties, it will flower with showy red flowered spikes. It performs well as a tall ground cover in the shade garden and one of its most delightful aspects is the delicious fragrance of its leaves when brushed against.