I have a rose mallow hybiscus. The leaves are turning yellow. It has quit blooming too. I have put spikes around it but that seems to make it worst. I didn't put but half of what was recomended. I water it every day. Am I over watering it? If I don't water it, the leaves go limp. I have it in a large pot. Could it be that it needs to be in a larger one? Any information would be appreciated.