My hibiscus was doing great until just after January when it suddenly lost almost all of its leaves and appears to be dying. What can I do for it??
Could be a lot of things. I assume you are talking about a tropical hibiscus. Take a look at this link about winter care: http://www.exotic-hibiscus.com/care/winter.htm Have you looked closely for bugs? Is the plant staying warm enough?
i have had great luck with hibiscus indoors (I live in the northeast). filtered sun and a spritz of water once a day seems to keep the humidity enough to survive the dry winter. every hibiscus that i have lost has been just as you said - and the only thing that i can tell you is that it's too dry in teh winter for them.
