Well, Talkior, to keep your Christmas tree looking its best, you'll need to provide it with proper care and maintenance. One important factor is to keep the tree watered regularly, as a well-hydrated tree will stay green and healthy longer. A good rule of thumb is to water your tree once every few days, or more frequently if it's in a warm or dry environment. You can use a water holding stand, or if you have a cut tree, you can use a tree preservative solution to help it stay fresh. And of course, keep the tree away from any heat sources or direct sunlight.