An awesome article on how to grow ginger in Missouri

To grow the plant in Zone 5 you will have to pay close attention to the frost schedule. The frost in Zone 5 typically ends at the beginning of May. Ginger plants need to be transplanted in the winter, so you must bring them indoors before the first frost in October.
Read more: How to Plant Ginger in Zone 5 | eHow.com http://www.ehow.com/how_5845233_plant-ginger-zone-5.html#ixzz1Ikppqzpl