The new growth has also lost leaves. I've been told this tropical plant needs low light and lots of water. It sits in a the back of a well-sunlit room with no direct exposure, and I've repotted and tried high and low water maintenance. I've also sprayed for mites, etc.
Nothing seems to help.
Any ideas would be appreciated. Many plants the world over are called Mahogany Trees. If you could provide the Latin name for it, then maybe someone could help you. If you are a member, please log in. Guests may use the spaces on the right to supply a name and email address.