Hello I live in Chicago and I have a Chinese Elm about 12 years old. I watered my tree once every few days kept it in 3-4 hours of sunlight, and fertilized as recommended once a week, then once a month in the winter. I placed it in a cool porch in mid November until a few days ago I placed it outside. Throughout the winter it had it's leaves and they were green with only a few that changed color in the fall. The leaved turned brown in Feb and up until last month (March) all the brown leaves fell off. When will my tree start to grow new leaves or is this tree dead? Thank you for your help and insight.