Fresh ginger root is lovely, but most home cooks will probably not use the entire root before it either spoils or starts to sprout. If it starts to sprout, and you like to garden, you are in luck. It is easy to plant a ginger root that has already sprouted, no matter what climate zone you live in. What's more, after the first year, you can harvest small bits of ginger root for culinary uses as needed--without killing your plant!
Fill your pot with a mixture of 1/3 sand and 2/3 potting soil. This will help to ensure good drainage for your ginger.
Dig a shallow hole for your ginger root in the soil. You will be placing it horizontally, so dig a hole slightly larger than the shape of the root if laid on its side.
Place the ginger root in the hole, sprouts facing upward
Cover the ginger root with the soil mixture and water.
Place near a window with filtered sunlight, perhaps one with blinds or a curtain. Ginger likes shady, warm areas.
Put the pot of ginger outside when the outdoor temperature is consistently above 50 degrees Fahrenheit. Make sure to keep it in a shady place and to water it frequently.
Apply an all-purpose fertilizer a couple of times a year. Spring and fall are good times to apply. Always follow the manufacturer's instructions for application so that you do not burn your ginger plant.