Posted: 21/01/2013 at 09:51
In the site I sent you it says that they loose their leaves when they are cold and underwatered. But they mustn't be watered too much either or the leaves go yellow and fall off. Another thing is that they need a lot of light, but not direct sunlight. The leaves drop off when they are in too dark a place. They can get insect troubles, such as red spider mite. I had one that got scale insect, tiny brown scales on the undersides of the leaves. They suck the sap and the leaves drop off. It's not easy to get rid of.