About 4 weeks ago I started my cool weather vegetables in my starting tray. Because I use a heating pad the seeds germinated in a week. I had cabbage, kohlrabi, turnips and kale. In the morning I would set them in the east facing window and at noontime I moved them to the West window. They were in the sun for several hours each day. I noticed immediately that they were growing tall and scraggly. Some of them just curled up and died. I was at a loss because I had done this at my old house for years and had good results. This last weekend I was going through some papers from the previous owner and found the paperwork on the new windows he had put in. It turned out that they were double glass and were coated to prevent UV rays from passing through. We had noticed last summer there was virtually no heat present when the sun came in and shined on us. Since the windows stopped the “damaging” rays of the sun from coming in my seedlings died as if they were in a dark room.