So … how long is it socially acceptable to keep a Christmas tree after Christmas?

My tree seems to have survived while I was away for Christmas, but part of me feels that I cannot get rid of it quite yet. After all, it’s still all green and festive and it seems like a shame to just yank it out of it’s watery home and throw it on the street corner to wither and die. True, technically it’s probably dead right now, given it’s “cut” state, but until it starts to turn brown and drop it’s needles, it almost seems like it is still alive.

Which is funny considering I can barely keep my potted plants alive.