Hibiscus is already cultivated for such long time that nobody knows where it's origines realy lay, the guess is between the Middle East and Japan. There are few hybrids able to survive winters in colder climates but the most of it are sub tropical or tropical variations. This plant is known to be very difficult to keep indoors and prone to lose it's flowers before they even opened. It's a picky plant and a heavy feeder, indoors it needs a place where everything is as constant as possible, air humidity, soil humidity, feeding and light and no drafft. Evrybody who kept or is keeping this plant can confirm that it's a very difficult bugger and if any of these conditions are not constant enough it will not flower at all or it will lose the flowers before they already opened.
An educated guess, since this plant is rather large and can grow up to 3 meters in height when planted out doors.. Indoors it probably is the small pot preventing it from developing a realy healthy deep rootsystem and there for makes it extra sensitive to changes in inveronmental conditions.
