Direct sun is not required or even suggested. It is not even necessary that they be indoors. They do need to be in a frost free area. This time of year they are just beginning to grow and the buds should be swelling and beginning to leaf. It is important that the starting medium be fast draining with lots of air in the root zone. I prefer a gritty mix containing fir bark,Turface or Play Ball and granite fines. Anything loose and gravelly will do. Al