Last October I moved my avocado tree from my landing into my garden room. It seems to like being there; however, my garden room isn't heated. The problem is that the tips of the leaves are beginning to turn brown. I think if I brought it back indoors it will be too hot for it. I have grown my little avocado tree from a cob, and I love it. What can I do? Do I feed her this time of year? Do I give her enough water, once every three weeks (it feels damp enough)? What am I doing wrong? My little tree is 3 feet tall, and I named her Ava.