Q.Should I Prune My Poinsettia
I have had a poinsettia since last October and was just wondering if I should prune it and how far back I should go. It had gotten quite big since I got it. It seems pretty healthy. It has lots of new growth and has very green leaves. I just don’t know if I should prune it or not. I have seen lots of differing opinions online about cutting it down to 5 inches. I don’t have any leaves 5 inches down and am concerned it will die if I cut it.

Certified GKH Gardening Expert
Hard pruning is a common practice, and this is the time to do it. If you don't want to put it outside to receive more light than it would through a window naturally, then you may want to use grow lights to give it a little extra boost indoors. This makes it easier to control daylight hours later, as well.
Keep in mind that keeping it in container outdoors requires a large enough container to prevent moisture loss too quickly.
This article will help:
Here is another for general care: