Mixed Yield
Over the years, my success with growing ginger have been mixed. At times the yield was good. At times, all I got were just skinny ginger roots. And at other times, there was nothing at all - the ginger that I planted just rotted away instead of sprouting.
I have had my suspicion with the pot placement. I grow them in pots instead of the ground, by the way. Pots placed under shadier area seems to produce healthier looking plants with bigger and better ginger roots. For pots placed under direct sunlight, young shoots will just turn yellow and eventually dry up. Or will have leaf stalks that are just about 12 inches in length (when it should be about 2 to 2½ feet) with skinny ginger roots.