My Gardenia is dying. We moved it to a larger pot and it never recovered. Most of the leaves are brown. It has new budding leaves but all current leaves are brown and drooping. It has been 2 months since we moved her. I live in Texas so winter was pretty much non existent. The weather has been pretty fair. She is pest free. We added iron to the new soil we planted her in. What can I do to bring her back?