Why, why, why?

Wednesday around noon I was driving on University, and at the Dry Creek intersection they were putting up a

Christmas Tree Lot!

Now I love Christmas. It's so amazing to think of the God of the universe coming down to earth as a baby...so helpless...so utterly dependent. But WHY on this beautiful planet He created, would we need to buy a Christmas tree on the 2nd of November? I mean, the Christmas season is special--with the Christian significance and the secular trappings--but how special can it be when it's almost a fourth of the year?