I am sorry for this delayed reply to your gardening question. We are transitioning to a new Q&A system and your question was unfortunately lost in the transition. I have discovered it now and hope this reply is not too late to be of help.
The following website has a photo of the plant for you to see its normal appearance. Sorry for the long web address, better use cut and paste!
Leaf drop is not really normal but rather a sign of some type of stress such as drought or root damage. If it is only the lower leaves and most of the rest are fine I would not be overly concerned, as such is going to happen as part of normal growth. But if it is more extensive there is something wrong in the roots.
Thanks for the question. Please stop in again soon!
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