Question
What causes leaves to yellow and fall off even on new growth?  

Answer
Ann,

Either overwatering or underwatering, probably overwatering. It hates swamps. This plant needs to get very dry between waterings. It should not be watered if it feels heavy. It needs to dry out till it feels light weight. But, it cannot be dry for more than a day or 2. If you have more questions write again.

Darlene