The idea of a living Christmas tree that can be planted outdoors after the holidays often sounds appealing, but without proper selection and care, this can be a disappointing experience. First, you should carefully select a tree that is suited to your part of the state. While white pine, spruce and fir will work in the cooler parts of Tennessee, they should be avoided in the warmer parts. Virginia pine, eastern red cedar, Japanese cedar and Arizona cypress are good choice for all parts of Tennessee. Avoid hemlock and leyland cypress due to numerous problems with insects and disease once they are in the landscape. Any living tree brought indoors should not remain inside longer than five days. One option is to go ahead and put the lights on the tree and enjoy the lights outside before time to bring it indoors. Be sure to keep it well watered, but not standing in water.