I rescued two poinsettias from work a couple months ago, repotted them and keep them in a room with a south-facing window and a humidifier. Both have red leaves which have started getting brown and dried out on the edges. Any idea why?
The red leaves are actually a bract beneath the actual Poinsettia flowers. It is normal for the bracts to die back that way. Remove them when they get too ugly and keep maintaining the green plant as you have... Getting your Poinsettia to re-bloom takes special effort. See the following page. http://www.thegardenhelper.com/poinsettias.htm
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