First of all, here's a video in which I explain how to grow ginger and other grocery store ingredients such as pineapples, sugar cane and coconuts. I shot it for Troy-Bilt as a #Saturday6 member, but it's perfect for this post too!
How to Grow your Own Ginger
1. Select a Healthy Root. The best roots (rhizomes) for growing are firm, fleshy and already have green points forming at the end of the 'fingers.' If you prefer, cut the ginger into separate pieces with at least one green tip per segment and allow to dry for a few days.
2. Soak the Roots Overnight in warm water. This will stimulate growth and rinse off any chemicals that might be present. A few of my friends have also had a lot of success soaking their various root crops in compost tea, believe it or not!
3. Set the Roots in Sphagnum Moss (or coconut fiber) so that the top of the root is visible, with the green growing tips pointing up. I used a propagating tray, but you can use any container wide enough to accommodate the root. Keep the sphagnum moss lightly moist, but allow it to dry out between waterings.
4. Transplant to a Pot once the first leaves have formed. At this point you should notice a mass of fleshy white roots, which can be gently teased loose from the moss. Hold the root just beneath the edge of the pot, and fill the pot with fresh potting mix so that the fine roots are surrounded and the top of the rhizome is barely visible.
5. Caring for Your Ginger is easy, as long as you provide warmth, humidity, moisture and drainage. Summer is the best time to grow ginger because it's already hot and humid, but if you're growing it indoors you can place it in a bright windowsill and occasionally mist it with water. Drainage is provided by simply using a pot with drainage holes.
That's it! Be sure to let me know if you have any experiences to share or questions that I can answer. I also have a post on growing turmeric for those of you who are lucky enough to find it in the produce aisle!
Here are some other posts you might like:
How to Grow Passionfruit From Leftover Seeds
Grow Garlic, Onions and Leeks from Scraps
All About Lemongrass
5 Unusual Uses for Okra
Living Air Plant Wreath
Handmade Paper Roses
Grow Dragonfruit from Seed
Make a Hanging String Garden
DIY Terrarium Light
Healthy Blueberry Muffins