Hydrangea Leaves Turn dark brown
Someone gave me a hydrangea plant bought from a store (no tag, no indication of what KIND of hydrangea it is). I kept it inside. I watered it as frequent as the other house plants, but then I found that it dried so quickly and watered it everyday. I did not take off the wrapping paper that held the water from overflowing until today. I did not check if it was watered too much. Two days ago, I found that the wrapping paper was holding a lot of excess water. It has kept losing its leaves.
I saw moldy surface on the soil. The leaves are turning dark brown
I doubt that the brown leaves were caused by something else other than over-watering. However, please advise me. What should I do now? Thanks