Make sure that the ginger root you choose is organic and is plump with tight skin. Your best bet is the roots with several eye buds on it (like little horns or potato eyes) and if they’re already slightly green, even better. Ginger you can find in the grocery store is often sprayed with chemicals like growth inhibitor, pesticides and fungicides. In order to get rid of these chemicals soak the ginger root overnight in warm water but for a minimum of 2-3 hours. After this your ginger root is ready for planting.
Original article and pictures take http://www.topinspired.com/top-10-tips-on-how-to-grow-your-ginger-indoors/ site