When I first saw it I wasn't sure what had
Notice how the leaves are all in an upright position. This is due to the plant being very dry. Because the winter was so consistently cold, I had little opportunity to open the over wintering boxes and give the plants any water. It reacted to the lack of water by pulling its leaves upright to protect the terminal growth and further reduce water loss. This is a normal reaction. But what it did is expose the undersides of the leaves to strong, direct sunlight (remember in winter the sun is low in the sky), and basically, sunburn the leaves. The undersides of the leaves are not normally exposed to direct sun. They weren't acclimated to direct sun, and when exposed they were damaged. As far as the plant is concerned, it is fine. In nature it would continue growing and eventually flower and set seed, its primary function. But in terms of a nice show plant, it is ruined. I probably should have anticipated this, but I didn't. I was concerned with just keeping the plants warm, forgetting about what the extended lack of water might cause. You live and learn, but this was a tough lesson.