Abutilon

The Abutilon is an evergreen bush, originating from the tropical areas of South America. Its flowers resemble small bells and bloom in orange, yellow, red and white.
The plant is easy to gpow. In the summer you can get the container with the plant outdoors. The soil has to be always wet. You could sprinkle the leaves with water from time to time. In the winter it doesn't have to be watered too much.
The Abutilon grows really and by trimming you could shape the plant as a small tree or a bush.