Not exactly a food topic, but if you're still deliberating about a Christmas tree (real tree? artificial tree? no tree? see what Grist's Umbra had to say), here are two ideas that are easier than buying a live one that you have to try to plant somewhere:
My choice, an idea borrowed from a friend: a live 4-foot Norfolk Island pine. It isn't native to the temperate zone, but it's lovely, and makes a fine house plant. The tree, bought from a local independent greenhouse/nursery, cost the same (or less) than a modest-sized "real" Christmas tree. The local chestnut tree farm that used to sell Christmas trees got out of the Christmas tree biz last year.
Meanwhile, a Pinwheel Farm offers this tradition, which it practices after Christmas but would be just as good beforehand. The following is from the Lawrence Sustainability Network's newsletter:
Here's how we keep the spirit of a Christmas Tree without spending money and energy on a disposable, plantation-grown dead tree covered with electric lights, non-recyclable tinsel, and decorations made in China! A longstanding winter tradition at the farm is to gather kids of all ages to help make edible decorations for the birds and decorate the locally-grown fir tree we planted a number of years ago.