During the holidays, keep poinsettias in a cool indoor location—away from heating vents and fireplaces. Once spring arrives next year, cut the stems back. Put them outdoors in the shade during summer and then bring them back indoors in fall. To get the dark red leaves that poinsettias are known for, they’ll need to spend half of the day in total darkness beginning in October. They’ll start blooming—ready for next Christmas—by mid-November.
For more gardening tips, go to https://agromin.com/resources.