I have had a serissa foetida/tree of a thousand stars since July. It has been flowering and new leaves growing all the time. In the last couple of weeks leaves have started to go brown at the tips (mainly on one side of the tree), and fall off. The leaves on the other side of the tree seem ok (green and look healthy - one or two have turned yellow and fallen), but I don't think new leaves are growing. One side seems considerably more bare than the other.
It was positioned near a window, with a lamp to one side (the side which is now going brown) could the light/heat from the lamp have donw this? I have now moved the lamp, but don't see any changes (it has only been a few days though).
I water it every two to three days by submerging the pot for a couple of mins/until the air bubbles disappear.
Can anyone suggest what I can do?