This is the time of the year when we bring a little bit of the outside, inside our homes.  I'm talking about a Christmas tree!  Sure you've probably heard about all the tips on keeping your Christmas tree fresh.  There's sugar in the water, the presevatives that some of the nurseries sell,  and making sure you NEVER let the water go down below the base of the tree.  It's something about the dryness and the sap closing off  the abilitiy of the tree to absorb water.  But do any of these things really work?  If you don't have a "greenthumb" you don't need to.  Here's a couple ways that you can keep your Christmas tree as pretty as ever!