I am living in Southeast Michigan and have recently purchased my first bonsai - a Chinese Elm. When I bought the tree, the lady at the bonsai shop sold it to me as an indoor tree. I brought it home and set it in a sunny windowsill. I've had it about a week and many of the leaves are turning yellow and dropping off. I have read that taking the tree outdoors may help; however, the outside temperature is cooler than the indoor temperature at this point. Just wondering if anyone has any advice. I am hoping this tree will make it. It still has a lot of green foliage. I moved it out of the windowsill at one point because I thought it was getting too much sun and the leaves stayed green for a few days.