kill the poinsettias

As I have my house to my self I am lazy and not decorating up for the Christmas season. No I am not scrooge but rather because I have no one to share the joy of the decorations with I figure It is not worth the effort. I will however enjoy the decorations at my family’s house in Fort Worth. The tree there looks great. Because my cousins were giving me a hard time about this I figured I would compromise. I bought a couple of poinsettias. They are pretty and all. The true question is how soon I will kill them. I am leaving for more than a week soon for my trip and they will this not get water. They will die, how sad. I will just have to buy more.