Growing ginger in your garden is really quite easy. Purchase a fresh piece of ginger from your grocery or farmers market. Look for a large piece with plenty of “nubs” and soak the root overnight in warm water before planting.
If you are in a northern climate where frost is a possibility, you will need to plant the ginger root in a pot that can be transferred indoors in the winter. Either drill a hole in the bottom of the pot, or place rocks at the base for drainage.
Fill the pot with well draining soil almost to the rim. Place the ginger root on top of the soil and cover with a thin (1/2″ to 1″) layer of dirt. Water well and place the pot in a place that gets plenty of sunlight.
Ginger plants like to be watered regularly, but they do best in well drained soil. When I did this experiment in our garden I tried to grow ginger in two pots, the one that received less water did much better than the one that received too much (that root rotted, an extremely stinky experience preparing that pot for the next planting).
After your ginger plant has matured, you can carefully harvest small portions of the root as needed without killing the plant. If you are anything like us, we always end up buying much more ginger than we could use and it either rots in the refrigerator or ends up forgotten in the freezer, so having a ginger plant we can harvest from is a much more sustainable option. If you try this let me know how the ginger does in your own garden!