Well, its that time of the year when poinsettias are so popular. I was in Argentina one June (which was their fall season) and they had poinsettia trees. Yes, they were tall bushes, no they actually were trees. They were not loaded with blooms like the ones we buy in the stores, but they were definitely poinsettias.
Poinsettias need bright light in order to hold their color and adequate humidity to prevent leaves dropping. In a cool but sunny window, with daily watering and good drainage and humidity, a Christmas poinsettia may stay attractive for several weeks.
If you want to try to keep this plant over for another year, sink the pot in a sunny garden location after frost danger has passed. Prune the stems severely, and water and fertilize regularly until cool nights arrive. Then, lift the pot and bring indoors again to a cool, sunny window and you might receive the bonus of another season of bloom.
For some very good flower information view: theflowerexpert.com
They have a blog that you can make comments on, or even add to the blog your own information. I will be referring to this site often as they seem to be professionals.