Well Chris, I'm sorry that your plans to overwinter your plant in the garage didn't work our as anticipated. Assuming the plant did not actually freeze at some time (darkened, soft tissue would be evident), my guess is that the plant simply shut down metabolically for the year, due to low temperatures and no watering. If it is "stored" in a place that will still support even minimal growth, it will require some basic light and water. The yellowing of the main stem and the dull color of the leaves suggests that the plant has gone dormant. If that is so, then you should be able to cut back the main stem until you encounter fresh growth, at which time you might consider moving to a warmer, well lit location, and begin light watering again. Alternately, at this point, overwinter in a cool, dry location with the root corm protected from moisture and freezing temperatures.
