At a local grocery store, I bought some young ginger (Zingiber officinale) that was harvested about 3 days ago. It includes the rhizome, some shoots, and part of the stems (refer to the picture below). The width of each of the three rhizomes in the picture is about 10 centimeters (4 inches).
I want to propagate these ginger roots. How deep should I bury these rhizomes in loamy soil? Where should the soil line be? I am guessing that the soil line should be at the pinkish parts of the ginger, but I am unsure.
