Yes, my tree is an evergreen, although in the winter it is more red… which seems not to make sense lol. I have left my tree outdoors every day since I got it in May 2009. Never once have I brought it in the house. It has survived from extremes from over 90 degrees to below freezing… I have heard that if the weather will get extremely cold, like below 0, it is not a bad idea to move it to a slightly warmer location, but not too warm! Maybe put it in a garage temporarily or something, but it must be in cold conditions all winter long. The only thing I do in the winter is knock snow off that accumulates on it. I think the tree is perfectly fine with temperature fluctuations outside, right now in IL the nights can get to the 20’s and the daytime can be 50-60. It is bad for the tree to have it get warm in the wintertime, like bringing it into a house that is 70 degrees, because it causes the tree to come out of dormancy which can kill it. I have a friend who also had a juniper that was left indoors during the winter and the poor thing died in less than a year. I am still learning myself, but it seems junipers just really like it outside.
~Heather