When I got my poinsetta over a year ago it was flowered and had dark red leaves. Since then I had to replant it to a larger pot. It had grown nicely. Know it has droped all of the dark leaves and has grown green leaves. Some get yellow and fall off. It is still growing leaves but it has not gotten flowers or the green leaves have not turned deep red. I was told it should be put in a dark place. I keep it in a very sunny window with other plants. What Iam I doing wrong. The leaves are lighter green and it has grown very high.