I have an ornamental orange tree that is 3 yers old. It has doubled it's size in the time we have had it, but every year when we bring it inside for the season we have one problem or another. The tree is now about 3 feet tall with a lot of oranges on it. It looks great, but it losing leaves at a quick pace and the stems are turning brown. Last year in the in the winter we suffered with spider mites so this year we were sure to treat it before and after bringing it inside. The room it is in has good lighthing and is warm. I don't think it is a cold root issue..could it be overwatering? That is what I've been reading here. If this is the problem, how soon will I know. I don't want to deprive it of water and cause another problem to occur. I don't see anything else wrong. It is getting new leaves..but some of them also fall off. Just running my hands over the plant will can cause 10-15 leaves to just drop. I examine this every day looking for clues. I am at a loss. Today I found 3-4 leaves that are mis-shaped. If yo look at them sideways, they would resemble 'smiling lips'. Could this be a clue. I am really worried. I did put to plant fertilizer stakes in the pot when I brought it inside. Could this be the problem? It flowered a LOT when we first brought it inside..but since then it has only been losing leaves and fruit..daily. It is in a clay pot. Any help would be greatly appreciated.